Sergei Morozov created FLINK-38310:
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Summary: Binary keys in a FinishedSnapshotSplitInfo are
incorrectly compared and hashed
Key: FLINK-38310
URL: https://issues.apache.org/jira/browse/FLINK-38310
Project: Flink
Issue Type: Bug
Components: Flink CDC
Affects Versions: cdc-3.4.0
Reporter: Sergei Morozov
When a FinishedSnapshotSplitInfo is represented as a string, its start and end
offsets are represented as arrays. Each element of these arrays itself can be
an array of bytes, if the split key type contains a binary field (see
[apache/flink-cdc#879|https://github.com/apache/flink-cdc/pull/879]).
If such a finished snapshot split info is logged, the log doesn't contain the
value of the binary key, it contains its address in memory:
{quote}splitStart=[[B@2c35e847], splitEnd=[[B@21e360a], highWatermark=...
{quote}
Additionally, if such objects are compared or hashed, they won't be equal and
won't have equal hashes.
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