PutManagerTest - testOneNodeFailurePutSuccess - crc mismatch error

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#1,233 opened on Aug 8, 2019 0 comments 0 reactions 0 assignees View on GitHub

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test-failure

Dominant language: Java
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Description

I encountered the following error recently:
```
com.github.ambry.router.PutManagerTest > testOneNodeFailurePutSuccess[2] FAILED
java.io.IOException: CRC mismatch, data in PutRequest is unreliable
at com.github.ambry.protocol.PutRequest$PutRequest_V4.readFrom(PutRequest.java:244)
at com.github.ambry.protocol.PutRequest.readFrom(PutRequest.java:98)
at com.github.ambry.router.PutManagerTest.deserializePutRequest(PutManagerTest.java:1192)
at com.github.ambry.router.PutManagerTest.verifyCompositeBlob(PutManagerTest.java:1148)
at com.github.ambry.router.PutManagerTest.verifyBlob(PutManagerTest.java:1098)
at com.github.ambry.router.PutManagerTest.assertSuccess(PutManagerTest.java:1030)
at com.github.ambry.router.PutManagerTest.submitPutsAndAssertSuccess(PutManagerTest.java:933)
at com.github.ambry.router.PutManagerTest.testOneNodeFailurePutSuccess(PutManagerTest.java:582)
```

```
com.github.ambry.router.PutManagerTest > testCompositeBlobChunkSizeMultiplePutSuccess[3] FAILED
java.io.IOException: CRC mismatch, data in PutRequest is unreliable
at com.github.ambry.protocol.PutRequest$PutRequest_V4.readFrom(PutRequest.java:244)
at com.github.ambry.protocol.PutRequest.readFrom(PutRequest.java:98)
at com.github.ambry.router.PutManagerTest.deserializePutRequest(PutManagerTest.java:1192)
at com.github.ambry.router.PutManagerTest.verifyCompositeBlob(PutManagerTest.java:1148)
at com.github.ambry.router.PutManagerTest.verifyBlob(PutManagerTest.java:1098)
at com.github.ambry.router.PutManagerTest.assertSuccess(PutManagerTest.java:1030)
at com.github.ambry.router.PutManagerTest.submitPutsAndAssertSuccess(PutManagerTest.java:933)
at com.github.ambry.router.PutManagerTest.testCompositeBlobChunkSizeMultiplePutSuccess(PutManagerTest.java:194)
```

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Open a pull request that references the issue number.

Research direction

Start with the failing PutManagerTest methods, especially testOneNodeFailurePutSuccess and testCompositeBlobChunkSizeMultiplePutSuccess, then trace deserializePutRequest and verifyBlob at the listed lines. Inspect PutRequest.java, including PutRequest_V4.readFrom at line 244, and reproduce the reported CRC mismatch; done means the affected tests pass without unreliable PutRequest data errors.

Written by the indexing model from the issue text.

Assessment

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