apurtell edited a comment on issue #339: HBASE-22627 Port HBASE-22617 (Recovered WAL directories not getting cleaned up) to branch-1 URL: https://github.com/apache/hbase/pull/339#issuecomment-505576076 @z-york This fixes an issue where a path component to the wal dir is missing after HBASE-20734, so we get files under /<root>/<namespace> instead of /<root>/data/<namespace> with the default config, and the erroneous location is not expected by the hfile archiver or table delete procedure, so they are never cleaned up. We had a production incident where we hit the HDFS directory 1 million entry limit and couldn't online regions.
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