Bryan Beaudreault created HBASE-27038:
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Summary: CellComparator should extend Serializable
Key: HBASE-27038
URL: https://issues.apache.org/jira/browse/HBASE-27038
Project: HBase
Issue Type: Improvement
Reporter: Bryan Beaudreault
Assignee: Bryan Beaudreault
Prior to HBASE-18945, CellComparator was a class which implemented
Serializable. In that jira, an interface was extracted with the intent of
making the implementation IA.Private. This broke some downstream consumers, so
the new CellComparator interface was made IA.Public in HBASE-19160.
One remaining breakage from that change is that if someone is using
CellComparator in spark it will fails because it's not serializable. Everything
in spark needs to be serializable, and the old CellComprator class used to
extend Serializable. There was some small discussion in HBASE-18945 about
removing Serializable, but I don't think anyone thought of this use-case.
The failure is:
Job aborted due to stage failure: Task not serializable:
java.io.NotSerializableException: org.apache.hadoop.hbase.CellComparatorImpl
We should make CellComparator extend Serializable, or have CellComparatorImpl
implement it.
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