Add file with NaN in statistics - #35

Merged
pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats
Jan 30, 2023
Merged

Add file with NaN in statistics#35
pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats

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File was generated with:

importpyarrowaspa# version 0.8.0importpyarrow.parquetaspqfromnumpyimportNaNtab=pa.Table.from_arrays(
[pa.array([1.0, NaN])],
names="x"
)
pq.write_table(tab, "nan_in_stats.parquet")
metadata=pq.read_metadata("nan_in_stats.parquet")
metadata.row_group(0).column(0)
# <pyarrow._parquet.ColumnChunkMetaData object at 0x7f28539e58f0># file_offset: 88# file_path: # type: DOUBLE# num_values: 2# path_in_schema: x# is_stats_set: True# statistics:# <pyarrow._parquet.RowGroupStatistics object at 0x7f28539e5738># has_min_max: True# min: 1# max: nan# null_count: 0# distinct_count: 0# num_values: 2# physical_type: DOUBLE# compression: 1# encodings: <map object at 0x7f28539eb4e0># has_dictionary_page: True# dictionary_page_offset: 4# data_page_offset: 36# index_page_offset: 0# total_compressed_size: 84# total_uncompressed_size: 80

Comment threaddata/README.md Outdated
Comment threaddata/README.md Outdated
| datapage_v1-snappy-compressed-checksum.parquet | compressed INT32 columns in v1 data pages with a matching CRC |
| datapage_v1-corrupt-checksum.parquet | uncompressed INT32 columns in v1 data pages with a mismatching CRC |
| overflow_i16_page_cnt.parquet | row group with more than INT16_MAX pages |
<<<<<<< HEAD

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Hmm, can you remove the merge markers here?

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🤦

Comment threaddata/README.md Outdated

## NaN in stats

Previous versions of the C++ Parquet writer would write NaN values in min and max

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"Previous versions" is quite unspecific, can you be more explciit?

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I noted the Parquet version that changed in.

Comment threaddata/README.md
> * If the max is a NaN, it should be ignored.
> * If the min is +0, the row group may contain -0 values as well.
> * If the max is -0, the row group may contain +0 values as well.
> * When looking for NaN values, min and max should be ignored.

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I think it would be useful to add the "File was generated with: [...]" snippet that is part of the PR description.

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I was thinking it would always be in the PR history, but your are right that in the text would be more convenient.

@wjones127
wjones127 requested a review from pitrouJanuary 26, 2023 16:36

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Thanks @wjones127 !

@pitroupitrou changed the title add file with NaN in statisticsAdd file with NaN in statisticsJan 30, 2023
@pitrou
pitrou merged commit 33b4e23 into apache:masterJan 30, 2023
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
Skip to content

Add file with NaN in statistics - #35

Merged
pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats
Jan 30, 2023
Merged

Add file with NaN in statistics#35
pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats

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@wjones127

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File was generated with:

importpyarrowaspa# version 0.8.0importpyarrow.parquetaspqfromnumpyimportNaNtab=pa.Table.from_arrays(
[pa.array([1.0, NaN])],
names="x"
)
pq.write_table(tab, "nan_in_stats.parquet")
metadata=pq.read_metadata("nan_in_stats.parquet")
metadata.row_group(0).column(0)
# <pyarrow._parquet.ColumnChunkMetaData object at 0x7f28539e58f0># file_offset: 88# file_path: # type: DOUBLE# num_values: 2# path_in_schema: x# is_stats_set: True# statistics:# <pyarrow._parquet.RowGroupStatistics object at 0x7f28539e5738># has_min_max: True# min: 1# max: nan# null_count: 0# distinct_count: 0# num_values: 2# physical_type: DOUBLE# compression: 1# encodings: <map object at 0x7f28539eb4e0># has_dictionary_page: True# dictionary_page_offset: 4# data_page_offset: 36# index_page_offset: 0# total_compressed_size: 84# total_uncompressed_size: 80

Comment threaddata/README.md Outdated
Comment threaddata/README.md Outdated
| datapage_v1-snappy-compressed-checksum.parquet | compressed INT32 columns in v1 data pages with a matching CRC |
| datapage_v1-corrupt-checksum.parquet | uncompressed INT32 columns in v1 data pages with a mismatching CRC |
| overflow_i16_page_cnt.parquet | row group with more than INT16_MAX pages |
<<<<<<< HEAD

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Hmm, can you remove the merge markers here?

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🤦

Comment threaddata/README.md Outdated

## NaN in stats

Previous versions of the C++ Parquet writer would write NaN values in min and max

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"Previous versions" is quite unspecific, can you be more explciit?

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I noted the Parquet version that changed in.

Comment threaddata/README.md
> * If the max is a NaN, it should be ignored.
> * If the min is +0, the row group may contain -0 values as well.
> * If the max is -0, the row group may contain +0 values as well.
> * When looking for NaN values, min and max should be ignored.

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I think it would be useful to add the "File was generated with: [...]" snippet that is part of the PR description.

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I was thinking it would always be in the PR history, but your are right that in the text would be more convenient.

@wjones127
wjones127 requested a review from pitrouJanuary 26, 2023 16:36

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Thanks @wjones127 !

@pitroupitrou changed the title add file with NaN in statisticsAdd file with NaN in statisticsJan 30, 2023
@pitrou
pitrou merged commit 33b4e23 into apache:masterJan 30, 2023
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@wjones127@pitrou
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

Add file with NaN in statistics - #35

Merged
pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats
Jan 30, 2023
Merged

Add file with NaN in statistics#35
pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats

Conversation

@wjones127

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File was generated with:

importpyarrowaspa# version 0.8.0importpyarrow.parquetaspqfromnumpyimportNaNtab=pa.Table.from_arrays(
[pa.array([1.0, NaN])],
names="x"
)
pq.write_table(tab, "nan_in_stats.parquet")
metadata=pq.read_metadata("nan_in_stats.parquet")
metadata.row_group(0).column(0)
# <pyarrow._parquet.ColumnChunkMetaData object at 0x7f28539e58f0># file_offset: 88# file_path: # type: DOUBLE# num_values: 2# path_in_schema: x# is_stats_set: True# statistics:# <pyarrow._parquet.RowGroupStatistics object at 0x7f28539e5738># has_min_max: True# min: 1# max: nan# null_count: 0# distinct_count: 0# num_values: 2# physical_type: DOUBLE# compression: 1# encodings: <map object at 0x7f28539eb4e0># has_dictionary_page: True# dictionary_page_offset: 4# data_page_offset: 36# index_page_offset: 0# total_compressed_size: 84# total_uncompressed_size: 80

Comment threaddata/README.md Outdated
Comment threaddata/README.md Outdated
| datapage_v1-snappy-compressed-checksum.parquet | compressed INT32 columns in v1 data pages with a matching CRC |
| datapage_v1-corrupt-checksum.parquet | uncompressed INT32 columns in v1 data pages with a mismatching CRC |
| overflow_i16_page_cnt.parquet | row group with more than INT16_MAX pages |
<<<<<<< HEAD

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Hmm, can you remove the merge markers here?

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🤦

Comment threaddata/README.md Outdated

## NaN in stats

Previous versions of the C++ Parquet writer would write NaN values in min and max

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"Previous versions" is quite unspecific, can you be more explciit?

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I noted the Parquet version that changed in.

Comment threaddata/README.md
> * If the max is a NaN, it should be ignored.
> * If the min is +0, the row group may contain -0 values as well.
> * If the max is -0, the row group may contain +0 values as well.
> * When looking for NaN values, min and max should be ignored.

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I think it would be useful to add the "File was generated with: [...]" snippet that is part of the PR description.

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MemberAuthor

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I was thinking it would always be in the PR history, but your are right that in the text would be more convenient.

@wjones127
wjones127 requested a review from pitrouJanuary 26, 2023 16:36

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Thanks @wjones127 !

@pitroupitrou changed the title add file with NaN in statisticsAdd file with NaN in statisticsJan 30, 2023
@pitrou
pitrou merged commit 33b4e23 into apache:masterJan 30, 2023
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms"); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

Add file with NaN in statistics - #35

Merged
pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats
Jan 30, 2023
Merged

Add file with NaN in statistics#35
pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats

Conversation

@wjones127

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File was generated with:

importpyarrowaspa# version 0.8.0importpyarrow.parquetaspqfromnumpyimportNaNtab=pa.Table.from_arrays(
[pa.array([1.0, NaN])],
names="x"
)
pq.write_table(tab, "nan_in_stats.parquet")
metadata=pq.read_metadata("nan_in_stats.parquet")
metadata.row_group(0).column(0)
# <pyarrow._parquet.ColumnChunkMetaData object at 0x7f28539e58f0># file_offset: 88# file_path: # type: DOUBLE# num_values: 2# path_in_schema: x# is_stats_set: True# statistics:# <pyarrow._parquet.RowGroupStatistics object at 0x7f28539e5738># has_min_max: True# min: 1# max: nan# null_count: 0# distinct_count: 0# num_values: 2# physical_type: DOUBLE# compression: 1# encodings: <map object at 0x7f28539eb4e0># has_dictionary_page: True# dictionary_page_offset: 4# data_page_offset: 36# index_page_offset: 0# total_compressed_size: 84# total_uncompressed_size: 80

Comment threaddata/README.md Outdated
Comment threaddata/README.md Outdated
| datapage_v1-snappy-compressed-checksum.parquet | compressed INT32 columns in v1 data pages with a matching CRC |
| datapage_v1-corrupt-checksum.parquet | uncompressed INT32 columns in v1 data pages with a mismatching CRC |
| overflow_i16_page_cnt.parquet | row group with more than INT16_MAX pages |
<<<<<<< HEAD

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Hmm, can you remove the merge markers here?

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🤦

Comment threaddata/README.md Outdated

## NaN in stats

Previous versions of the C++ Parquet writer would write NaN values in min and max

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"Previous versions" is quite unspecific, can you be more explciit?

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I noted the Parquet version that changed in.

Comment threaddata/README.md
> * If the max is a NaN, it should be ignored.
> * If the min is +0, the row group may contain -0 values as well.
> * If the max is -0, the row group may contain +0 values as well.
> * When looking for NaN values, min and max should be ignored.

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I think it would be useful to add the "File was generated with: [...]" snippet that is part of the PR description.

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MemberAuthor

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I was thinking it would always be in the PR history, but your are right that in the text would be more convenient.

@wjones127
wjones127 requested a review from pitrouJanuary 26, 2023 16:36

@pitroupitrou left a comment

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Thanks @wjones127 !

@pitroupitrou changed the title add file with NaN in statisticsAdd file with NaN in statisticsJan 30, 2023
@pitrou
pitrou merged commit 33b4e23 into apache:masterJan 30, 2023
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
Skip to content

Add file with NaN in statistics - #35

Merged
pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats
Jan 30, 2023
Merged

Add file with NaN in statistics#35
pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats

Conversation

@wjones127

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File was generated with:

importpyarrowaspa# version 0.8.0importpyarrow.parquetaspqfromnumpyimportNaNtab=pa.Table.from_arrays(
[pa.array([1.0, NaN])],
names="x"
)
pq.write_table(tab, "nan_in_stats.parquet")
metadata=pq.read_metadata("nan_in_stats.parquet")
metadata.row_group(0).column(0)
# <pyarrow._parquet.ColumnChunkMetaData object at 0x7f28539e58f0># file_offset: 88# file_path: # type: DOUBLE# num_values: 2# path_in_schema: x# is_stats_set: True# statistics:# <pyarrow._parquet.RowGroupStatistics object at 0x7f28539e5738># has_min_max: True# min: 1# max: nan# null_count: 0# distinct_count: 0# num_values: 2# physical_type: DOUBLE# compression: 1# encodings: <map object at 0x7f28539eb4e0># has_dictionary_page: True# dictionary_page_offset: 4# data_page_offset: 36# index_page_offset: 0# total_compressed_size: 84# total_uncompressed_size: 80

Comment threaddata/README.md Outdated
Comment threaddata/README.md Outdated
| datapage_v1-snappy-compressed-checksum.parquet | compressed INT32 columns in v1 data pages with a matching CRC |
| datapage_v1-corrupt-checksum.parquet | uncompressed INT32 columns in v1 data pages with a mismatching CRC |
| overflow_i16_page_cnt.parquet | row group with more than INT16_MAX pages |
<<<<<<< HEAD

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Hmm, can you remove the merge markers here?

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🤦

Comment threaddata/README.md Outdated

## NaN in stats

Previous versions of the C++ Parquet writer would write NaN values in min and max

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Member

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"Previous versions" is quite unspecific, can you be more explciit?

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MemberAuthor

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I noted the Parquet version that changed in.

Comment threaddata/README.md
> * If the max is a NaN, it should be ignored.
> * If the min is +0, the row group may contain -0 values as well.
> * If the max is -0, the row group may contain +0 values as well.
> * When looking for NaN values, min and max should be ignored.

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Member

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I think it would be useful to add the "File was generated with: [...]" snippet that is part of the PR description.

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MemberAuthor

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I was thinking it would always be in the PR history, but your are right that in the text would be more convenient.

@wjones127
wjones127 requested a review from pitrouJanuary 26, 2023 16:36

@pitroupitrou left a comment

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Thanks @wjones127 !

@pitroupitrou changed the title add file with NaN in statisticsAdd file with NaN in statisticsJan 30, 2023
@pitrou
pitrou merged commit 33b4e23 into apache:masterJan 30, 2023
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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Add file with NaN in statistics - #35

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pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats
Jan 30, 2023
Merged

Add file with NaN in statistics#35
pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats

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File was generated with:

importpyarrowaspa# version 0.8.0importpyarrow.parquetaspqfromnumpyimportNaNtab=pa.Table.from_arrays(
[pa.array([1.0, NaN])],
names="x"
)
pq.write_table(tab, "nan_in_stats.parquet")
metadata=pq.read_metadata("nan_in_stats.parquet")
metadata.row_group(0).column(0)
# <pyarrow._parquet.ColumnChunkMetaData object at 0x7f28539e58f0># file_offset: 88# file_path: # type: DOUBLE# num_values: 2# path_in_schema: x# is_stats_set: True# statistics:# <pyarrow._parquet.RowGroupStatistics object at 0x7f28539e5738># has_min_max: True# min: 1# max: nan# null_count: 0# distinct_count: 0# num_values: 2# physical_type: DOUBLE# compression: 1# encodings: <map object at 0x7f28539eb4e0># has_dictionary_page: True# dictionary_page_offset: 4# data_page_offset: 36# index_page_offset: 0# total_compressed_size: 84# total_uncompressed_size: 80

Comment threaddata/README.md Outdated
Comment threaddata/README.md Outdated
| datapage_v1-snappy-compressed-checksum.parquet | compressed INT32 columns in v1 data pages with a matching CRC |
| datapage_v1-corrupt-checksum.parquet | uncompressed INT32 columns in v1 data pages with a mismatching CRC |
| overflow_i16_page_cnt.parquet | row group with more than INT16_MAX pages |
<<<<<<< HEAD

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Hmm, can you remove the merge markers here?

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🤦

Comment threaddata/README.md Outdated

## NaN in stats

Previous versions of the C++ Parquet writer would write NaN values in min and max

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"Previous versions" is quite unspecific, can you be more explciit?

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I noted the Parquet version that changed in.

Comment threaddata/README.md
> * If the max is a NaN, it should be ignored.
> * If the min is +0, the row group may contain -0 values as well.
> * If the max is -0, the row group may contain +0 values as well.
> * When looking for NaN values, min and max should be ignored.

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I think it would be useful to add the "File was generated with: [...]" snippet that is part of the PR description.

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I was thinking it would always be in the PR history, but your are right that in the text would be more convenient.

@wjones127
wjones127 requested a review from pitrouJanuary 26, 2023 16:36

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Thanks @wjones127 !

@pitroupitrou changed the title add file with NaN in statisticsAdd file with NaN in statisticsJan 30, 2023
@pitrou
pitrou merged commit 33b4e23 into apache:masterJan 30, 2023
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

Add file with NaN in statistics - #35

Merged
pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats
Jan 30, 2023
Merged

Add file with NaN in statistics#35
pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats

Conversation

@wjones127

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File was generated with:

importpyarrowaspa# version 0.8.0importpyarrow.parquetaspqfromnumpyimportNaNtab=pa.Table.from_arrays(
[pa.array([1.0, NaN])],
names="x"
)
pq.write_table(tab, "nan_in_stats.parquet")
metadata=pq.read_metadata("nan_in_stats.parquet")
metadata.row_group(0).column(0)
# <pyarrow._parquet.ColumnChunkMetaData object at 0x7f28539e58f0># file_offset: 88# file_path: # type: DOUBLE# num_values: 2# path_in_schema: x# is_stats_set: True# statistics:# <pyarrow._parquet.RowGroupStatistics object at 0x7f28539e5738># has_min_max: True# min: 1# max: nan# null_count: 0# distinct_count: 0# num_values: 2# physical_type: DOUBLE# compression: 1# encodings: <map object at 0x7f28539eb4e0># has_dictionary_page: True# dictionary_page_offset: 4# data_page_offset: 36# index_page_offset: 0# total_compressed_size: 84# total_uncompressed_size: 80

Comment threaddata/README.md Outdated
Comment threaddata/README.md Outdated
| datapage_v1-snappy-compressed-checksum.parquet | compressed INT32 columns in v1 data pages with a matching CRC |
| datapage_v1-corrupt-checksum.parquet | uncompressed INT32 columns in v1 data pages with a mismatching CRC |
| overflow_i16_page_cnt.parquet | row group with more than INT16_MAX pages |
<<<<<<< HEAD

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Hmm, can you remove the merge markers here?

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🤦

Comment threaddata/README.md Outdated

## NaN in stats

Previous versions of the C++ Parquet writer would write NaN values in min and max

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"Previous versions" is quite unspecific, can you be more explciit?

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I noted the Parquet version that changed in.

Comment threaddata/README.md
> * If the max is a NaN, it should be ignored.
> * If the min is +0, the row group may contain -0 values as well.
> * If the max is -0, the row group may contain +0 values as well.
> * When looking for NaN values, min and max should be ignored.

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I think it would be useful to add the "File was generated with: [...]" snippet that is part of the PR description.

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MemberAuthor

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I was thinking it would always be in the PR history, but your are right that in the text would be more convenient.

@wjones127
wjones127 requested a review from pitrouJanuary 26, 2023 16:36

@pitroupitrou left a comment

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Thanks @wjones127 !

@pitroupitrou changed the title add file with NaN in statisticsAdd file with NaN in statisticsJan 30, 2023
@pitrou
pitrou merged commit 33b4e23 into apache:masterJan 30, 2023
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@wjones127@pitrou
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode"); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })();
Skip to content

Add file with NaN in statistics - #35

Merged
pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats
Jan 30, 2023
Merged

Add file with NaN in statistics#35
pitrou merged 3 commits into
apache:masterfrom
wjones127:nan-in-stats

Conversation

@wjones127

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File was generated with:

importpyarrowaspa# version 0.8.0importpyarrow.parquetaspqfromnumpyimportNaNtab=pa.Table.from_arrays(
[pa.array([1.0, NaN])],
names="x"
)
pq.write_table(tab, "nan_in_stats.parquet")
metadata=pq.read_metadata("nan_in_stats.parquet")
metadata.row_group(0).column(0)
# <pyarrow._parquet.ColumnChunkMetaData object at 0x7f28539e58f0># file_offset: 88# file_path: # type: DOUBLE# num_values: 2# path_in_schema: x# is_stats_set: True# statistics:# <pyarrow._parquet.RowGroupStatistics object at 0x7f28539e5738># has_min_max: True# min: 1# max: nan# null_count: 0# distinct_count: 0# num_values: 2# physical_type: DOUBLE# compression: 1# encodings: <map object at 0x7f28539eb4e0># has_dictionary_page: True# dictionary_page_offset: 4# data_page_offset: 36# index_page_offset: 0# total_compressed_size: 84# total_uncompressed_size: 80

Comment threaddata/README.md Outdated
Comment threaddata/README.md Outdated
| datapage_v1-snappy-compressed-checksum.parquet | compressed INT32 columns in v1 data pages with a matching CRC |
| datapage_v1-corrupt-checksum.parquet | uncompressed INT32 columns in v1 data pages with a mismatching CRC |
| overflow_i16_page_cnt.parquet | row group with more than INT16_MAX pages |
<<<<<<< HEAD

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Hmm, can you remove the merge markers here?

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MemberAuthor

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🤦

Comment threaddata/README.md Outdated

## NaN in stats

Previous versions of the C++ Parquet writer would write NaN values in min and max

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

"Previous versions" is quite unspecific, can you be more explciit?

Copy link
Copy Markdown
MemberAuthor

Choose a reason for hiding this comment

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I noted the Parquet version that changed in.

Comment threaddata/README.md
> * If the max is a NaN, it should be ignored.
> * If the min is +0, the row group may contain -0 values as well.
> * If the max is -0, the row group may contain +0 values as well.
> * When looking for NaN values, min and max should be ignored.

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I think it would be useful to add the "File was generated with: [...]" snippet that is part of the PR description.

Copy link
Copy Markdown
MemberAuthor

Choose a reason for hiding this comment

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I was thinking it would always be in the PR history, but your are right that in the text would be more convenient.

@wjones127
wjones127 requested a review from pitrouJanuary 26, 2023 16:36

@pitroupitrou left a comment

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Thanks @wjones127 !

@pitroupitrou changed the title add file with NaN in statisticsAdd file with NaN in statisticsJan 30, 2023
@pitrou
pitrou merged commit 33b4e23 into apache:masterJan 30, 2023
Sign up for freeto join this conversation on GitHub. Already have an account? Sign in to comment

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2 participants

@wjones127@pitrou