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https://issues.apache.org/jira/browse/KAFKA-6538?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias J. Sax resolved KAFKA-6538.
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Resolution: Fixed
Fix Version/s: 2.0.0
> 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
> Fix For: 2.0.0
>
>
> 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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