Buffer int overflow in CapacityByteArrayOutputStream, SnappyCompressor
- Langage dominant
- Java
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- Merge moyen
- 3 j 12 h
- PR mergées (30 j)
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Description
During an attempted write operation, a buffer position integer overflow is resulting in a IllegalArgumentException: Negative capacity: -2147336621 exception.
```
20/10/06 15:30:39 INFO HadoopRDD: Input split: s3a:///part-00015-96362e5d-d047-4f31-812b-38ff79f6919c-c000.txt.bz2:268435456+33554432
20/10/06 17:23:37 ERROR Utils: Aborting task
java.lang.IllegalArgumentException: Negative capacity: -2147336621
at java.nio.Buffer.(Buffer.java:199)
at java.nio.ByteBuffer.(ByteBuffer.java:281)
at java.nio.ByteBuffer.(ByteBuffer.java:289)
at java.nio.MappedByteBuffer.(MappedByteBuffer.java:89)
at java.nio.DirectByteBuffer.(DirectByteBuffer.java:119)
at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:311)
at org.apache.parquet.hadoop.codec.SnappyCompressor.setInput(SnappyCompressor.java:97)
at org.apache.parquet.hadoop.codec.NonBlockedCompressorStream.write(NonBlockedCompressorStream.java:48)
at org.apache.parquet.bytes.CapacityByteArrayOutputStream.writeToOutput(CapacityByteArrayOutputStream.java:227)
at org.apache.parquet.bytes.CapacityByteArrayOutputStream.writeTo(CapacityByteArrayOutputStream.java:247)
at org.apache.parquet.bytes.BytesInput$CapacityBAOSBytesInput.writeAllTo(BytesInput.java:405)
at org.apache.parquet.bytes.BytesInput$SequenceBytesIn.writeAllTo(BytesInput.java:296)
at org.apache.parquet.hadoop.CodecFactory$HeapBytesCompressor.compress(CodecFactory.java:164)
at org.apache.parquet.hadoop.ColumnChunkPageWriteStore$ColumnChunkPageWriter.writePage(ColumnChunkPageWriteStore.java:95)
at org.apache.parquet.column.impl.ColumnWriterV1.writePage(ColumnWriterV1.java:147)
at org.apache.parquet.column.impl.ColumnWriterV1.flush(ColumnWriterV1.java:235)
at org.apache.parquet.column.impl.ColumnWriteStoreV1.flush(ColumnWriteStoreV1.java:122)
at org.apache.parquet.hadoop.InternalParquetRecordWriter.flushRowGroupToStore(InternalParquetRecordWriter.java:172)
at org.apache.parquet.hadoop.InternalParquetRecordWriter.checkBlockSizeReached(InternalParquetRecordWriter.java:148)
at org.apache.parquet.hadoop.InternalParquetRecordWriter.write(InternalParquetRecordWriter.java:130)
at org.apache.parquet.hadoop.ParquetRecordWriter.write(ParquetRecordWriter.java:182)
at org.apache.parquet.hadoop.ParquetRecordWriter.write(ParquetRecordWriter.java:44)
at org.apache.spark.sql.execution.datasources.parquet.ParquetOutputWriter.write(ParquetOutputWriter.scala:40)
at org.apache.spark.sql.execution.datasources.SingleDirectoryDataWriter.write(FileFormatDataWriter.scala:137)
at org.apache.spark.sql.execution.datasources.FileFormatWriter$$anonfun$org$apache$spark$sql$execution$datasources$FileFormatWriter$$executeTask$3.apply(FileFormatWriter.scala:242)
at org.apache.spark.sql.execution.datasources.FileFormatWriter$$anonfun$org$apache$spark$sql$execution$datasources$FileFormatWriter$$executeTask$3.apply(FileFormatWriter.scala:239)
at org.apache.spark.util.Utils$.tryWithSafeFinallyAndFailureCallbacks(Utils.scala:1394)
at org.apache.spark.sql.execution.datasources.FileFormatWriter$.org$apache$spark$sql$execution$datasources$FileFormatWriter$$executeTask(FileFormatWriter.scala:245)
at org.apache.spark.sql.execution.datasources.FileFormatWriter$$anonfun$write$1.apply(FileFormatWriter.scala:169)
at org.apache.spark.sql.execution.datasources.FileFormatWriter$$anonfun$write$1.apply(FileFormatWriter.scala:168)
at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90)
at org.apache.spark.scheduler.Task.run(Task.scala:121)
at org.apache.spark.executor.Executor$TaskRunner$$anonfun$10.apply(Executor.scala:402)
at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1360)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:408)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
```
2,147,483,647 (max int) - 2147336621 (negative capacity) = 147026.
The input bz2 files are all roughly 900 MiB in size. The target parquet part files are 1.7 GiB in size.
Increasing the partition count from 64 to 1024 fixes the issue. The output parquet part files drop to 100MiB in size.
However, it's unclear to me what the root cause is and why increasing partition count helps. Was it an unlucky row grouping that bumped the buffer size over by 147KB, i.e, any change up or down in parittion count would have helped? Is it approaching the parquet part file size limit?
This issue seems related to PARQUET-1632 but it's not using the ConcatenatingByteArrayCollector, which potentially means a distinct root cause. The input dataset does have large string columns (up to 10MB) but nothing close to the signed int max of 2.4G that was produced in PARQUET-1632.
**Reporter**: [Artem Shnayder](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=shndr)
**Note**: *This issue was originally created as [PARQUET-1919](https://issues.apache.org/jira/browse/PARQUET-1919). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*
Guide de contribution
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Piste de recherche
Commencez par CapacityByteArrayOutputStream.writeToOutput, SnappyCompressor.setInput et NonBlockedCompressorStream.write de la trace de pile signalée, puis suivez le chemin par lequel les groupes de lignes volumineux atteignent le compresseur. Reproduisez le problème avec une entrée volumineuse et comparez les tailles des partitions ; le travail est terminé lorsque la limite de dépassement est identifiée et qu’un test de non-régression empêchant l’échec dû à une capacité négative est ajouté.
Rédigé par le modèle d'indexation à partir du texte de l'issue.
Évaluation
- Stack technique
- java
- Domaine
- data-engineering
- Type d'issue
- Bug
- Difficulté
- 4/5
- Temps estimé
- 3-5 jours
- Activité
- À l'abandon
- Clarté
- À clarifier
- Accessibilité débutants
- 35/100