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https://issues.apache.org/jira/browse/PARQUET-860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16370053#comment-16370053
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e.birukov commented on PARQUET-860:
-----------------------------------
I get the same error
This happens when I get the temporary unavailability of s3
....FileSystemException...
at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:158)
at org.apache.hadoop.fs.s3a.S3AOutputStream.close(S3AOutputStream.java:121)
at
org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:72)
at org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:106)
at org.apache.parquet.hadoop.ParquetFileWriter.end(ParquetFileWriter.java:643)
when I call the close () method again
Caused by: java.lang.NullPointerException
at
org.apache.parquet.hadoop.InternalParquetRecordWriter.flushRowGroupToStore(InternalParquetRecordWriter.java:162)
at
org.apache.parquet.hadoop.InternalParquetRecordWriter.close(InternalParquetRecordWriter.java:109)
at org.apache.parquet.hadoop.ParquetWriter.close(ParquetWriter.java:301)
I read data from the stream and write data usin ParquetWriter. So this problem
is critical. It causes data loss!
> ParquetWriter.getDataSize NullPointerException after closed
> -----------------------------------------------------------
>
> Key: PARQUET-860
> URL: https://issues.apache.org/jira/browse/PARQUET-860
> Project: Parquet
> Issue Type: Bug
> Components: parquet-mr
> Affects Versions: 1.9.0
> Environment: Linux prim 4.8.13-1-ARCH #1 SMP PREEMPT Fri Dec 9
> 07:24:34 CET 2016 x86_64 GNU/Linux
> openjdk version "1.8.0_112"
> OpenJDK Runtime Environment (build 1.8.0_112-b15)
> OpenJDK 64-Bit Server VM (build 25.112-b15, mixed mode)
> Reporter: Mike Mintz
> Priority: Major
>
> When I run {{ParquetWriter.getDataSize()}}, it works normally. But after I
> call {{ParquetWriter.close()}}, subsequent calls to ParquetWriter.getDataSize
> result in a NullPointerException.
> {noformat}
> java.lang.NullPointerException
> at
> org.apache.parquet.hadoop.InternalParquetRecordWriter.getDataSize(InternalParquetRecordWriter.java:132)
> at
> org.apache.parquet.hadoop.ParquetWriter.getDataSize(ParquetWriter.java:314)
> at FileBufferState.getFileSizeInBytes(FileBufferState.scala:83)
> {noformat}
> The reason for the NPE appears to be in
> {{InternalParquetRecordWriter.getDataSize}}, where it assumes that
> {{columnStore}} is not null.
> But the {{close()}} method calls {{flushRowGroupToStore()}} which sets
> {{columnStore = null}}.
> I'm guessing that once the file is closed, we can just return
> {{lastRowGroupEndPos}} since there should be no more buffered data, but I
> don't fully understand how this class works.
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