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[Python] Prevent corrupting files with Multiple matches for FieldRef.Name #32660

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[Python] Prevent corrupting files with Multiple matches for FieldRef.Name#32660
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milesgranger
Labels
Component: PythonType: bug

Description

@asfimport
asfimport
opened on Aug 11, 2022

{}Version{}: pyarrow 9.0.0

Description

Users can add a column with the the same name as an existing column to a table via pyarrow.Table.add_column().

Additionally, that table can be written to a parquet file with pyarrow.parquet.write_table().

However, the written file cannot be read with pyarrow.parquet.read_table() due to having multiple columns with the same name.

Flagging this as a bug because I believe anything that is successfully written by write_table() should be readable by read_table().

Minimum reproducible example


>>> import pyarrow.parquet as pq
>>> import pyarrow as pa
>>> t = pa.Table.from_pydict(\{'a': [1,2,3]})
>>> pq.write_table(t.add_column(0, 'a', pa.array([1.1,2.2,3.3])), 'test.parquet')
>>> pq.read_table('test.parquet')
pyarrow.lib.ArrowInvalid: Multiple matches for FieldRef.Name(a) in a: double
a: int64
__fragment_index: int32
__batch_index: int32
__last_in_fragment: bool
__filename: string

Environment: MacOS, Python 3.10.3
Reporter: Grayden Shand
Assignee: Miles Granger / @milesgranger

Related issues:

PRs and other links:

Note: This issue was originally created as ARROW-17388. Please see the migration documentation for further details.

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observer.observe(document.body, { childList: true, subtree: true });
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try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
[Python] Prevent corrupting files with Multiple matches for FieldRef.Name · Issue #32660 · apache/arrow · GitHub
    Skip to content
    [Python] Prevent corrupting files with Multiple matches for FieldRef.Name #32660
    Closed
    Closed
    [Python] Prevent corrupting files with Multiple matches for FieldRef.Name#32660
    Assignees
    milesgranger
    Labels
    Component: PythonType: bug
    Description
    @asfimport
    asfimport
    opened on Aug 11, 2022
    {}Version{}: pyarrow 9.0.0
    Description
    Users can add a column with the the same name as an existing column to a table via pyarrow.Table.add_column().
    Additionally, that table can be written to a parquet file with pyarrow.parquet.write_table().
    However, the written file cannot be read with pyarrow.parquet.read_table() due to having multiple columns with the same name.
    Flagging this as a bug because I believe anything that is successfully written by write_table() should be readable by read_table().
    Minimum reproducible example
    
>>> import pyarrow.parquet as pq
>>> import pyarrow as pa
>>> t = pa.Table.from_pydict(\{'a': [1,2,3]})
>>> pq.write_table(t.add_column(0, 'a', pa.array([1.1,2.2,3.3])), 'test.parquet')
>>> pq.read_table('test.parquet')
pyarrow.lib.ArrowInvalid: Multiple matches for FieldRef.Name(a) in a: double
a: int64
__fragment_index: int32
__batch_index: int32
__last_in_fragment: bool
__filename: string

    Environment: MacOS, Python 3.10.3
    Reporter: Grayden Shand
    Assignee: Miles Granger / @milesgranger
    Related issues:
    PRs and other links:
    Note: This issue was originally created as ARROW-17388. Please see the migration documentation for further details.
    Metadata
    Metadata
    Assignees
    Labels
    Component: PythonType: bug
    Type
    No type
    Projects
    No projects
      Milestone
      No milestone
      Relationships
      None yet
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      No branches or pull requests
      Issue actions
      
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
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var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
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} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
[Python] Prevent corrupting files with Multiple matches for FieldRef.Name · Issue #32660 · apache/arrow · GitHub
      Skip to content
      [Python] Prevent corrupting files with Multiple matches for FieldRef.Name #32660
      Closed
      Closed
      [Python] Prevent corrupting files with Multiple matches for FieldRef.Name#32660
      Assignees
      milesgranger
      Labels
      Component: PythonType: bug
      Description
      @asfimport
      asfimport
      opened on Aug 11, 2022
      {}Version{}: pyarrow 9.0.0
      Description
      Users can add a column with the the same name as an existing column to a table via pyarrow.Table.add_column().
      Additionally, that table can be written to a parquet file with pyarrow.parquet.write_table().
      However, the written file cannot be read with pyarrow.parquet.read_table() due to having multiple columns with the same name.
      Flagging this as a bug because I believe anything that is successfully written by write_table() should be readable by read_table().
      Minimum reproducible example
      
>>> import pyarrow.parquet as pq
>>> import pyarrow as pa
>>> t = pa.Table.from_pydict(\{'a': [1,2,3]})
>>> pq.write_table(t.add_column(0, 'a', pa.array([1.1,2.2,3.3])), 'test.parquet')
>>> pq.read_table('test.parquet')
pyarrow.lib.ArrowInvalid: Multiple matches for FieldRef.Name(a) in a: double
a: int64
__fragment_index: int32
__batch_index: int32
__last_in_fragment: bool
__filename: string

      Environment: MacOS, Python 3.10.3
      Reporter: Grayden Shand
      Assignee: Miles Granger / @milesgranger
      Related issues:
      PRs and other links:
      Note: This issue was originally created as ARROW-17388. Please see the migration documentation for further details.
      Metadata
      Metadata
      Assignees
      Labels
      Component: PythonType: bug
      Type
      No type
      Projects
      No projects
        Milestone
        No milestone
        Relationships
        None yet
        Development
        No branches or pull requests
        Issue actions
        
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
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var ref = document.referrer;
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if (q) {
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var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
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var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
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Array.from(node.childNodes).forEach(highlight);
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highlight(document.body);
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mutations.forEach(function(m) {
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if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
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});
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observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
[Python] Prevent corrupting files with Multiple matches for FieldRef.Name · Issue #32660 · apache/arrow · GitHub
        Skip to content
        [Python] Prevent corrupting files with Multiple matches for FieldRef.Name #32660
        Closed
        Closed
        [Python] Prevent corrupting files with Multiple matches for FieldRef.Name#32660
        Assignees
        milesgranger
        Labels
        Component: PythonType: bug
        Description
        @asfimport
        asfimport
        opened on Aug 11, 2022
        {}Version{}: pyarrow 9.0.0
        Description
        Users can add a column with the the same name as an existing column to a table via pyarrow.Table.add_column().
        Additionally, that table can be written to a parquet file with pyarrow.parquet.write_table().
        However, the written file cannot be read with pyarrow.parquet.read_table() due to having multiple columns with the same name.
        Flagging this as a bug because I believe anything that is successfully written by write_table() should be readable by read_table().
        Minimum reproducible example
        
>>> import pyarrow.parquet as pq
>>> import pyarrow as pa
>>> t = pa.Table.from_pydict(\{'a': [1,2,3]})
>>> pq.write_table(t.add_column(0, 'a', pa.array([1.1,2.2,3.3])), 'test.parquet')
>>> pq.read_table('test.parquet')
pyarrow.lib.ArrowInvalid: Multiple matches for FieldRef.Name(a) in a: double
a: int64
__fragment_index: int32
__batch_index: int32
__last_in_fragment: bool
__filename: string

        Environment: MacOS, Python 3.10.3
        Reporter: Grayden Shand
        Assignee: Miles Granger / @milesgranger
        Related issues:
        PRs and other links:
        Note: This issue was originally created as ARROW-17388. Please see the migration documentation for further details.
        Metadata
        Metadata
        Assignees
        Labels
        Component: PythonType: bug
        Type
        No type
        Projects
        No projects
          Milestone
          No milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
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return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
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});
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cleanLinks();
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mutations.forEach(function(m) {
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});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
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}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
[Python] Prevent corrupting files with Multiple matches for FieldRef.Name · Issue #32660 · apache/arrow · GitHub
          Skip to content
          [Python] Prevent corrupting files with Multiple matches for FieldRef.Name #32660
          Closed
          Closed
          [Python] Prevent corrupting files with Multiple matches for FieldRef.Name#32660
          Assignees
          milesgranger
          Labels
          Component: PythonType: bug
          Description
          @asfimport
          asfimport
          opened on Aug 11, 2022
          {}Version{}: pyarrow 9.0.0
          Description
          Users can add a column with the the same name as an existing column to a table via pyarrow.Table.add_column().
          Additionally, that table can be written to a parquet file with pyarrow.parquet.write_table().
          However, the written file cannot be read with pyarrow.parquet.read_table() due to having multiple columns with the same name.
          Flagging this as a bug because I believe anything that is successfully written by write_table() should be readable by read_table().
          Minimum reproducible example
          
>>> import pyarrow.parquet as pq
>>> import pyarrow as pa
>>> t = pa.Table.from_pydict(\{'a': [1,2,3]})
>>> pq.write_table(t.add_column(0, 'a', pa.array([1.1,2.2,3.3])), 'test.parquet')
>>> pq.read_table('test.parquet')
pyarrow.lib.ArrowInvalid: Multiple matches for FieldRef.Name(a) in a: double
a: int64
__fragment_index: int32
__batch_index: int32
__last_in_fragment: bool
__filename: string

          Environment: MacOS, Python 3.10.3
          Reporter: Grayden Shand
          Assignee: Miles Granger / @milesgranger
          Related issues:
          PRs and other links:
          Note: This issue was originally created as ARROW-17388. Please see the migration documentation for further details.
          Metadata
          Metadata
          Assignees
          Labels
          Component: PythonType: bug
          Type
          No type
          Projects
          No projects
            Milestone
            No milestone
            Relationships
            None yet
            Development
            No branches or pull requests
            Issue actions
            
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
[Python] Prevent corrupting files with Multiple matches for FieldRef.Name · Issue #32660 · apache/arrow · GitHub
            Skip to content
            [Python] Prevent corrupting files with Multiple matches for FieldRef.Name #32660
            Closed
            Closed
            [Python] Prevent corrupting files with Multiple matches for FieldRef.Name#32660
            Assignees
            milesgranger
            Labels
            Component: PythonType: bug
            Description
            @asfimport
            asfimport
            opened on Aug 11, 2022
            {}Version{}: pyarrow 9.0.0
            Description
            Users can add a column with the the same name as an existing column to a table via pyarrow.Table.add_column().
            Additionally, that table can be written to a parquet file with pyarrow.parquet.write_table().
            However, the written file cannot be read with pyarrow.parquet.read_table() due to having multiple columns with the same name.
            Flagging this as a bug because I believe anything that is successfully written by write_table() should be readable by read_table().
            Minimum reproducible example
            
>>> import pyarrow.parquet as pq
>>> import pyarrow as pa
>>> t = pa.Table.from_pydict(\{'a': [1,2,3]})
>>> pq.write_table(t.add_column(0, 'a', pa.array([1.1,2.2,3.3])), 'test.parquet')
>>> pq.read_table('test.parquet')
pyarrow.lib.ArrowInvalid: Multiple matches for FieldRef.Name(a) in a: double
a: int64
__fragment_index: int32
__batch_index: int32
__last_in_fragment: bool
__filename: string

            Environment: MacOS, Python 3.10.3
            Reporter: Grayden Shand
            Assignee: Miles Granger / @milesgranger
            Related issues:
            PRs and other links:
            Note: This issue was originally created as ARROW-17388. Please see the migration documentation for further details.
            Metadata
            Metadata
            Assignees
            Labels
            Component: PythonType: bug
            Type
            No type
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
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unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
[Python] Prevent corrupting files with Multiple matches for FieldRef.Name · Issue #32660 · apache/arrow · GitHub
              Skip to content
              [Python] Prevent corrupting files with Multiple matches for FieldRef.Name #32660
              Closed
              Closed
              [Python] Prevent corrupting files with Multiple matches for FieldRef.Name#32660
              Assignees
              milesgranger
              Labels
              Component: PythonType: bug
              Description
              @asfimport
              asfimport
              opened on Aug 11, 2022
              {}Version{}: pyarrow 9.0.0
              Description
              Users can add a column with the the same name as an existing column to a table via pyarrow.Table.add_column().
              Additionally, that table can be written to a parquet file with pyarrow.parquet.write_table().
              However, the written file cannot be read with pyarrow.parquet.read_table() due to having multiple columns with the same name.
              Flagging this as a bug because I believe anything that is successfully written by write_table() should be readable by read_table().
              Minimum reproducible example
              
>>> import pyarrow.parquet as pq
>>> import pyarrow as pa
>>> t = pa.Table.from_pydict(\{'a': [1,2,3]})
>>> pq.write_table(t.add_column(0, 'a', pa.array([1.1,2.2,3.3])), 'test.parquet')
>>> pq.read_table('test.parquet')
pyarrow.lib.ArrowInvalid: Multiple matches for FieldRef.Name(a) in a: double
a: int64
__fragment_index: int32
__batch_index: int32
__last_in_fragment: bool
__filename: string

              Environment: MacOS, Python 3.10.3
              Reporter: Grayden Shand
              Assignee: Miles Granger / @milesgranger
              Related issues:
              PRs and other links:
              Note: This issue was originally created as ARROW-17388. Please see the migration documentation for further details.
              Metadata
              Metadata
              Assignees
              Labels
              Component: PythonType: bug
              Type
              No type
              Projects
              No projects
                Milestone
                No milestone
                Relationships
                None yet
                Development
                No branches or pull requests
                Issue actions
                
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
[Python] Prevent corrupting files with Multiple matches for FieldRef.Name · Issue #32660 · apache/arrow · GitHub
                Skip to content
                [Python] Prevent corrupting files with Multiple matches for FieldRef.Name #32660
                Closed
                Closed
                [Python] Prevent corrupting files with Multiple matches for FieldRef.Name#32660
                Assignees
                milesgranger
                Labels
                Component: PythonType: bug
                Description
                @asfimport
                asfimport
                opened on Aug 11, 2022
                {}Version{}: pyarrow 9.0.0
                Description
                Users can add a column with the the same name as an existing column to a table via pyarrow.Table.add_column().
                Additionally, that table can be written to a parquet file with pyarrow.parquet.write_table().
                However, the written file cannot be read with pyarrow.parquet.read_table() due to having multiple columns with the same name.
                Flagging this as a bug because I believe anything that is successfully written by write_table() should be readable by read_table().
                Minimum reproducible example
                
>>> import pyarrow.parquet as pq
>>> import pyarrow as pa
>>> t = pa.Table.from_pydict(\{'a': [1,2,3]})
>>> pq.write_table(t.add_column(0, 'a', pa.array([1.1,2.2,3.3])), 'test.parquet')
>>> pq.read_table('test.parquet')
pyarrow.lib.ArrowInvalid: Multiple matches for FieldRef.Name(a) in a: double
a: int64
__fragment_index: int32
__batch_index: int32
__last_in_fragment: bool
__filename: string

                Environment: MacOS, Python 3.10.3
                Reporter: Grayden Shand
                Assignee: Miles Granger / @milesgranger
                Related issues:
                PRs and other links:
                Note: This issue was originally created as ARROW-17388. Please see the migration documentation for further details.
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