[HBASE-22912] [Backport] HBASE-22867 to branch-1 to avoid ForkJoinPool to spawn thousands of threads - ASF JIRA

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Replace the ForkJoinPool in CleanerChore by ThreadPoolExecutor which can limit the spawn thread size and avoid the master GC frequently. The replacement is an internal implementation in CleanerChore, so no config key change, the upstream users can just upgrade the hbase master without any other change.

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Replace the ForkJoinPool in CleanerChore by ThreadPoolExecutor which can limit the spawn thread size and avoid the master GC frequently. The replacement is an internal implementation in CleanerChore, so no config key change, the upstream users can just upgrade the hbase master without any other change.

relates to

HBASE-22867 The ForkJoinPool in CleanerChore will spawn thousands of threads in our cluster with thousands table

links to

GitHub Pull Request #549