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https://issues.apache.org/jira/browse/PARQUET-1317?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16500388#comment-16500388
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ASF GitHub Bot commented on PARQUET-1317:
-----------------------------------------
nandorKollar commented on issue #489: PARQUET-1317: Fix
ParquetMetadataConverter throw NPE
URL: https://github.com/apache/parquet-mr/pull/489#issuecomment-394399754
LGTM, it even improved the logic, my change did the conversion twice for no
reason.
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> ParquetMetadataConverter throw NPE
> ----------------------------------
>
> Key: PARQUET-1317
> URL: https://issues.apache.org/jira/browse/PARQUET-1317
> Project: Parquet
> Issue Type: Bug
> Components: parquet-mr
> Affects Versions: 1.10.1
> Reporter: Yuming Wang
> Assignee: Yuming Wang
> Priority: Major
>
> How to reproduce:
> {code:scala}
> $ bin/spark-shell
> scala> spark.range(10).selectExpr("cast(id as string) as
> id").coalesce(1).write.parquet("/tmp/parquet-1317")
> scala>
> java -jar ./parquet-tools/target/parquet-tools-1.10.1-SNAPSHOT.jar head
> --debug
> file:///tmp/parquet-1317/part-00000-6cfafbdd-fdeb-4861-8499-8583852ba437-c000.snappy.parquet
> {code}
> {noformat}
> java.io.IOException: Could not read footer: java.lang.NullPointerException
> at
> org.apache.parquet.hadoop.ParquetFileReader.readAllFootersInParallel(ParquetFileReader.java:271)
> at
> org.apache.parquet.hadoop.ParquetFileReader.readAllFootersInParallelUsingSummaryFiles(ParquetFileReader.java:202)
> at
> org.apache.parquet.hadoop.ParquetFileReader.readFooters(ParquetFileReader.java:354)
> at
> org.apache.parquet.tools.command.RowCountCommand.execute(RowCountCommand.java:88)
> at org.apache.parquet.tools.Main.main(Main.java:223)
> Caused by: java.lang.NullPointerException
> at
> org.apache.parquet.format.converter.ParquetMetadataConverter.getOriginalType(ParquetMetadataConverter.java:828)
> at
> org.apache.parquet.format.converter.ParquetMetadataConverter.buildChildren(ParquetMetadataConverter.java:1173)
> at
> org.apache.parquet.format.converter.ParquetMetadataConverter.fromParquetSchema(ParquetMetadataConverter.java:1124)
> at
> org.apache.parquet.format.converter.ParquetMetadataConverter.fromParquetMetadata(ParquetMetadataConverter.java:1058)
> at
> org.apache.parquet.format.converter.ParquetMetadataConverter.readParquetMetadata(ParquetMetadataConverter.java:1052)
> at
> org.apache.parquet.hadoop.ParquetFileReader.readFooter(ParquetFileReader.java:532)
> at
> org.apache.parquet.hadoop.ParquetFileReader.readFooter(ParquetFileReader.java:505)
> at
> org.apache.parquet.hadoop.ParquetFileReader.readFooter(ParquetFileReader.java:499)
> at
> org.apache.parquet.hadoop.ParquetFileReader.readFooter(ParquetFileReader.java:476)
> at
> org.apache.parquet.hadoop.ParquetFileReader$2.call(ParquetFileReader.java:261)
> at
> org.apache.parquet.hadoop.ParquetFileReader$2.call(ParquetFileReader.java:257)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> java.io.IOException: Could not read footer:
> java.lang.NullPointerException{noformat}
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