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Zach York commented on HBASE-20665: ----------------------------------- I swore I fixed this in a recent commit, but I guess I must have missed it in the latest version. Thanks for calling this out. > "Already cached block XXX" message should be DEBUG > -------------------------------------------------- > > Key: HBASE-20665 > URL: https://issues.apache.org/jira/browse/HBASE-20665 > Project: HBase > Issue Type: Task > Components: BlockCache > Affects Versions: 1.2.0, 2.0.0 > Reporter: Sean Busbey > Priority: Minor > Labels: beginner > Fix For: 3.0.0, 2.1.0, 1.5.0 > > > Testing a local cluster that relies on the LruBlockCache for a scan-heavy > workload and I'm getting a bunch of log entries at WARN > {code} > 2018-05-30 12:28:47,192 WARN org.apache.hadoop.hbase.io.hfile.LruBlockCache: > Cached an already cached block: df01f5bf6a244f6bb1a626b927377fff_54780812 > cb:df01f5bf6a244f6bb1a626b927377fff_54780812. This is harmless and can happen > in rare cases (see HBASE-8547) > {code} > As the log message notes (and the code confirms) this is a harmless result of > contention for getting a block into the CHM. the message should be at DEBUG. -- This message was sent by Atlassian JIRA (v7.6.3#76005)