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  1. HBase
  2. HBASE-20665

"Already cached block XXX" message should be DEBUG

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      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

      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)
      

      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.

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        1. HBASE-20665.master.001.patch
          0.7 kB
          Josh Elser
        2. HBASE-20665.master.001.patch
          0.7 kB
          Eric Maynard

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            emaynard Eric Maynard
            busbey Sean Busbey
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