joshelser opened a new pull request #1029: HBASE-23679 FileSystem objects leak when cleaned up in cleanupBulkLoad URL: https://github.com/apache/hbase/pull/1029 The cleanupBulkLoad method is only called for the first Region in the table which was being bulk loaded into. This means that potentially N-1 other RegionServers (where N is the number of RegionServers) will leak one FileSystem object into the FileSystem cache which will never be cleaned up. We need to do this clean-up as a part of secureBulkLoadHFiles otherwise we cannot guarantee that heap usage won't grow unbounded.
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