GitHub user dongjoon-hyun opened a pull request:
https://github.com/apache/spark/pull/20619
[SPARK-23390][SQL] Register task completion listerners first in
ParquetFileFormat
## What changes were proposed in this pull request?
ParquetFileFormat leaks opened files in some cases. This PR prevents that
by register task completion listers first before initialization.
-
https://amplab.cs.berkeley.edu/jenkins/view/Spark%20QA%20Test%20(Dashboard)/job/spark-branch-2.3-test-sbt-hadoop-2.7/205/testReport/org.apache.spark.sql/FileBasedDataSourceSuite/_It_is_not_a_test_it_is_a_sbt_testing_SuiteSelector_/
```
Caused by: sbt.ForkMain$ForkError: java.lang.Throwable: null
at
org.apache.spark.DebugFilesystem$.addOpenStream(DebugFilesystem.scala:36)
at org.apache.spark.DebugFilesystem.open(DebugFilesystem.scala:70)
at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:769)
at
org.apache.parquet.hadoop.ParquetFileReader.<init>(ParquetFileReader.java:538)
at
org.apache.spark.sql.execution.datasources.parquet.SpecificParquetRecordReaderBase.initialize(SpecificParquetRecordReaderBase.java:149)
at
org.apache.spark.sql.execution.datasources.parquet.VectorizedParquetRecordReader.initialize(VectorizedParquetRecordReader.java:133)
at
org.apache.spark.sql.execution.datasources.parquet.ParquetFileFormat$$anonfun$buildReaderWithPartitionValues$1.apply(ParquetFileFormat.scala:400)
at
org.apache.spark.sql.execution.datasources.parquet.ParquetFileFormat$$anonfun$buildReaderWithPartitionValues$1.apply(ParquetFileFormat.scala:356)
at
org.apache.spark.sql.execution.datasources.FileScanRDD$$anon$1.org$apache$spark$sql$execution$datasources$FileScanRDD$$anon$$readCurrentFile(FileScanRDD.scala:125)
at
org.apache.spark.sql.execution.datasources.FileScanRDD$$anon$1.nextIterator(FileScanRDD.scala:179)
at
org.apache.spark.sql.execution.datasources.FileScanRDD$$anon$1.hasNext(FileScanRDD.scala:106)
```
## How was this patch tested?
N/A
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjoon-hyun/spark SPARK-23390
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/20619.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #20619
----
commit 43f809fd2ff619c901e05bc062ab70aa65371a46
Author: Dongjoon Hyun <dongjoon@...>
Date: 2018-02-15T16:55:43Z
[SPARK-23390][SQL] Register task completion listerners first in
ParquetFileFormat
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