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https://issues.apache.org/jira/browse/KAFKA-6538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16432146#comment-16432146
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ASF GitHub Bot commented on KAFKA-6538:
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jadireddi opened a new pull request #4846: KAFKA-6538: Fixed RocksDBStore to
enhance processor state exceptions with more context
URL: https://github.com/apache/kafka/pull/4846
https://issues.apache.org/jira/browse/KAFKA-6538
Fixed against `Base:1.1` version.
Fixed Class:`RocksDBStore` to enhance Processor State Exception containing
Key/Value values as Bytes/byte[] to Bytes/Bytes form in the error message for
displaying more useful context .
*More detailed description of your change,
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*Summary of testing strategy (including rationale)
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tests are expected for any behaviour change and
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### Committer Checklist (excluded from commit message)
- [ ] Verify design and implementation
- [ ] Verify test coverage and CI build status
- [ ] Verify documentation (including upgrade notes)
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> Enhance ByteStore exceptions with more context information
> ----------------------------------------------------------
>
> Key: KAFKA-6538
> URL: https://issues.apache.org/jira/browse/KAFKA-6538
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Affects Versions: 1.1.0
> Reporter: Matthias J. Sax
> Assignee: Jagadesh Adireddi
> Priority: Minor
> Labels: newbie
>
> In KIP-182 we refactored all stores to by plain {{Bytes/byte[]}} stores and
> only have concrete key/value types on outer layers/wrappers of the stores.
> For this reason, the most inner {{RocksDBStore}} cannot provide useful error
> messages anymore if a put/get/delete operation fails as it only handles plain
> bytes.
> In addition, the corresponding calls to record changelog records to record
> collectors will also be sending byte arrays only, and hence when there is an
> error happening, the record collector can only display the key but not the
> value since it is all bytes:
> {code}
> [ERROR] org.apache.kafka.streams.processor.internals.RecordCollectorImpl -
> task [2_2] Error sending record (key {"eventId":XXX,"version":123}
> value [<byte array>] timestamp YYY) to topic TTT
> due to ...
> {code}
> Therefore, we should enhance exceptions thrown from {{RocksDBStore}} with
> corresponding information for which key/value the operation failed in the
> wrapping stores (KeyValueStore, WindowedStored, and SessionStore).
> Cf https://github.com/apache/kafka/pull/4518 that cleans up {{RocksDBStore}}
> exceptions.
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