apache / apache/uniffle

[Bug] The deserialization Read of the Shuffle Read line failed

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#2,630 2 comments 0 reactions 0 assignees View on GitHub
Dominant language
Java
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Forks
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Avg merge
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Merged PRs (30d)
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Description

### Code of Conduct

- [x] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)

### Search before asking

- [x] I have searched in the [issues](https://github.com/apache/incubator-uniffle/issues?q=is%3Aissue) and found no similar issues.

### Describe the bug

In Shuffle Read, deserialization throws java.io.EOFException: reached end of stream after reading 19336 bytes; 576,807,796 bytes expected exception. This issue does not occur frequently.

Image

`java.io.EOFException: reached end of stream after reading 19336 bytes; 576807796 bytes expected
at org.sparkproject.guava.io.ByteStreams.readFully(ByteStreams.java:735)
at org.apache.spark.sql.execution.UnsafeRowSerializerInstance$$anon$2$$anon$3.next(UnsafeRowSerializer.scala:127)
at org.apache.spark.sql.execution.UnsafeRowSerializerInstance$$anon$2$$anon$3.next(UnsafeRowSerializer.scala:110)
at org.apache.spark.shuffle.reader.RssShuffleDataIterator.next(RssShuffleDataIterator.java:150)
at org.apache.spark.shuffle.reader.RssShuffleReader$MultiPartitionIterator.next(RssShuffleReader.java:261)
at org.apache.spark.shuffle.reader.RssShuffleReader$MultiPartitionIterator.next(RssShuffleReader.java:215)
at org.apache.spark.InterruptibleIterator.next(InterruptibleIterator.scala:40)
at scala.collection.Iterator$$anon$10.next(Iterator.scala:461)
at org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage23.sort_addToSorter_0$(Unknown Source)
at org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage23.processNext(Unknown Source)
at org.apache.spark.sql.execution.BufferedRowIterator.hasNext(BufferedRowIterator.java:43)
at org.apache.spark.sql.execution.WholeStageCodegenExec$$anon$1.hasNext(WholeStageCodegenExec.scala:759)
at org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage25.processNext(Unknown Source)
at org.apache.spark.sql.execution.BufferedRowIterator.hasNext(BufferedRowIterator.java:43)
at org.apache.spark.sql.execution.WholeStageCodegenExec$$anon$2.hasNext(WholeStageCodegenExec.scala:778)
at scala.collection.Iterator$$anon$10.hasNext(Iterator.scala:460)
at org.apache.spark.shuffle.writer.RssShuffleWriter.writeImpl(RssShuffleWriter.java:170)
at org.apache.spark.shuffle.writer.RssShuffleWriter.write(RssShuffleWriter.java:157)
at org.apache.spark.shuffle.ShuffleWriteProcessor.write(ShuffleWriteProcessor.scala:59)
at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:99)
at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:52)
at org.apache.spark.scheduler.Task.run(Task.scala:131)
at org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:506)
at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1463)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:509)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)`

### Affects Version(s)

0.11.0

### Uniffle Server Log Output

```logtalk

```

### Uniffle Engine Log Output

```logtalk

```

### Uniffle Server Configurations

```yaml

```

### Uniffle Engine Configurations

```yaml

```

### Additional context

_No response_

### Are you willing to submit PR?

- [ ] Yes I am willing to submit a PR!

Contributor guide

Open the contributing guide

Research direction

Start with the stack-trace entry points in RssShuffleDataIterator.java, RssShuffleReader.java, and UnsafeRowSerializer.scala, then investigate how the Shuffle Read stream reports bytes read versus bytes expected. Reproduce the intermittent EOFException with the affected 0.11.0 setup and capture the missing server and engine configuration details. Done means Shuffle Read no longer fails during deserialization and the behavior is covered by a regression test.

Written by the indexing model from the issue text.

Assessment

Tech stack
java, spark
Domain
distributed-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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