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[SPARK-23434][SQL] Spark should not warn metadata directory for a HDFS file path - #20616
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dongjoon-hyun wants to merge 3 commits into
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[SPARK-23434][SQL] Spark should not warn metadata directory for a HDFS file path#20616dongjoon-hyun wants to merge 3 commits into
metadata directory for a HDFS file path#20616dongjoon-hyun wants to merge 3 commits into
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SparkQA
commented
Feb 15, 2018
Test build #87469 has finished for PR 20616 at commit
|
dongjoon-hyun
commented
Feb 15, 2018
MemberAuthor
Retest this please. |
SparkQA
commented
Feb 15, 2018
Test build #87476 has finished for PR 20616 at commit
|
dongjoon-hyun
commented
Feb 15, 2018
MemberAuthor
Hi, @cloud-fan and @gatorsmile . |
cloud-fan
commented
Feb 20, 2018
Contributor
LGTM, cc @zsxwing |
dongjoon-hyun
commented
Feb 20, 2018
MemberAuthor
Thank you for review, @cloud-fan . |
| if (fs.isDirectory(hdfsPath)) { | ||
| val metadataPath = new Path(hdfsPath, metadataDir) | ||
| val res = fs.exists(metadataPath) | ||
| res |
Contributor
There was a problem hiding this comment.
nit: just fs.exists(new Path(hdfsPath, metadataDir))
SparkQA
commented
Feb 20, 2018
Test build #87550 has finished for PR 20616 at commit
|
dongjoon-hyun
commented
Feb 20, 2018
MemberAuthor
Could you review this, @zsxwing and @gatorsmile ? |
dongjoon-hyun
commented
Feb 20, 2018
MemberAuthor
With more manual tests, I observed that the original situation happens on only kerberized environments. I updated PR/JIRA description. |
zsxwing
commented
Feb 20, 2018
Member
@dongjoon-hyun could you also post the error happening in kerberized environments? |
dongjoon-hyun
commented
Feb 20, 2018
MemberAuthor
The warning error messages in kerberized environments are the one in PR/JIRA description. |
zsxwing
commented
Feb 20, 2018
Member
@dongjoon-hyun I meant the stack trace thrown from |
MemberAuthor
Here, it is. It's |
zsxwing
commented
Feb 21, 2018
Member
LGTM. Merging to master. Thanks! |
dongjoon-hyun
commented
Feb 21, 2018
MemberAuthor
Thank you, @zsxwing and @cloud-fan . |
dongjoon-hyun
commented
Mar 1, 2018
MemberAuthor
Hi, @cloud-fan and @zsxwing . |
cloud-fan
commented
Mar 2, 2018
Contributor
no objection from my side. |
dongjoon-hyun
commented
Mar 2, 2018
MemberAuthor
Thank you, @cloud-fan . |
peter-toth pushed a commit
to peter-toth/spark
that referenced
this pull request
Oct 6, 2018
…DFS file path
In a kerberized cluster, when Spark reads a file path (e.g. `people.json`), it warns with a wrong warning message during looking up `people.json/_spark_metadata`. The root cause of this situation is the difference between `LocalFileSystem` and `DistributedFileSystem`. `LocalFileSystem.exists()` returns `false`, but `DistributedFileSystem.exists` raises `org.apache.hadoop.security.AccessControlException`.
```scala
scala> spark.version
res0: String = 2.4.0-SNAPSHOT
scala> spark.read.json("file:///usr/hdp/current/spark-client/examples/src/main/resources/people.json").show
+----+-------+
| age| name|
+----+-------+
|null|Michael|
| 30| Andy|
| 19| Justin|
+----+-------+
scala> spark.read.json("hdfs:///tmp/people.json")
18/02/15 05:00:48 WARN streaming.FileStreamSink: Error while looking for metadata directory.
18/02/15 05:00:48 WARN streaming.FileStreamSink: Error while looking for metadata directory.
```
After this PR,
```scala
scala> spark.read.json("hdfs:///tmp/people.json").show
+----+-------+
| age| name|
+----+-------+
|null|Michael|
| 30| Andy|
| 19| Justin|
+----+-------+
```
Manual.
Author: Dongjoon Hyun <dongjoon@apache.org>
Closesapache#20616 from dongjoon-hyun/SPARK-23434.
Change-Id: I45931d7132c5cb9acd6cf095b9af6cb87a3f0c33
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What changes were proposed in this pull request?
In a kerberized cluster, when Spark reads a file path (e.g.
people.json), it warns with a wrong warning message during looking uppeople.json/_spark_metadata. The root cause of this situation is the difference betweenLocalFileSystemandDistributedFileSystem.LocalFileSystem.exists()returnsfalse, butDistributedFileSystem.existsraisesorg.apache.hadoop.security.AccessControlException.After this PR,
How was this patch tested?
Manual.