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Ted Yu commented on HBASE-18309: -------------------------------- bq. hbase.rootdir is /tmp/hbase Please use directory outside of /tmp as rootdir (just to avoid cleanup in /tmp from other process). The sorting in current code base would clean large directory first. So simulation should have skewed distribution. > Support multi threads in CleanerChore > ------------------------------------- > > Key: HBASE-18309 > URL: https://issues.apache.org/jira/browse/HBASE-18309 > Project: HBase > Issue Type: Improvement > Components: wal > Reporter: binlijin > Assignee: Reid Chan > Attachments: HBASE-18309.master.001.patch, > HBASE-18309.master.002.patch > > > 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. -- This message was sent by Atlassian JIRA (v6.4.14#64029)