HBASE-23996 Add metric for the split WAL procedure - #8515
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Assert the new splitWAL procedure metric in two places: TestMasterMetrics#testDefaultMasterMetrics (splitWALSubmittedCount is registered and reads 0 at rest) and TestSplitWALManager#testSplitLogs (increments by one per SplitWALProcedure, verified against a captured baseline on the procedure-based non-ZK split path). Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
Mark the legacy ZooKeeper-coordinated WAL split coordination classes (ZKSplitLogManagerCoordination, ZkSplitLogWorkerCoordination) and the associated MetricsMasterFileSystem source as deprecated, since the procedure-based distributed WAL splitter (SplitWALManager) is the default and these are only reachable under the legacy hbase.split.writer.coordinated.by.zk path. Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
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We already have deprecated HBASE_SPLIT_WAL_COORDINATED_BY_ZK but some Classes only used by that flow was not marked deprecated. I have marked those deprecated in this PR only. I hope that is fine else I will create another PR for that.
Some screen shots for the old metrics and the new one.
example 1
example 2
Old one