binlijin created HBASE-18309:
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Summary: Support multi threads to clean oldWALs
Key: HBASE-18309
URL: https://issues.apache.org/jira/browse/HBASE-18309
Project: HBase
Issue Type: Improvement
Reporter: binlijin
There is only one thread in LogCleaner to clean oldWALs and in our big cluster
we find this is not enough. The number of files under oldWALs reach the
max-directory-items limit of HDFS and cause region server crash, so we use
multi threads for LogCleaner and the crash not happened any more.
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