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From "Nick Dimiduk (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-11552) 2.3 stack advisor doesn't take into account HBASE-11520
Date Fri, 29 May 2015 22:45:18 GMT
Nick Dimiduk created AMBARI-11552:
-------------------------------------

             Summary: 2.3 stack advisor doesn't take into account HBASE-11520
                 Key: AMBARI-11552
                 URL: https://issues.apache.org/jira/browse/AMBARI-11552
             Project: Ambari
          Issue Type: Bug
            Reporter: Nick Dimiduk


Launching a RS with the HDP-2.2 stack_advisor's output on a machine with lots of ram results
in

{noformat}
regionserver.HRegionServer: Failed init
java.lang.OutOfMemoryError: Direct buffer memory
at java.nio.Bits.reserveMemory(Bits.java:658)
at java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:123)
at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:311)
at org.apache.hadoop.hbase.util.ByteBufferArray.<init>(ByteBufferArray.java:65)
at org.apache.hadoop.hbase.io.hfile.bucket.ByteBufferIOEngine.<init>(ByteBufferIOEngine.java:47)
at org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.getIOEngineFromName(BucketCache.java:309)
at org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.<init>(BucketCache.java:219)
at org.apache.hadoop.hbase.io.hfile.CacheConfig.getBucketCache(CacheConfig.java:568)
at org.apache.hadoop.hbase.io.hfile.CacheConfig.getL2(CacheConfig.java:511)
at org.apache.hadoop.hbase.io.hfile.CacheConfig.instantiateBlockCache(CacheConfig.java:591)
at org.apache.hadoop.hbase.io.hfile.CacheConfig.<init>(CacheConfig.java:231)
at org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:1349)
at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:896)
at java.lang.Thread.run(Thread.java:745)
{noformat}

HBASE-11520 introduced a subtle change in the configuration, it's release note says

bq. Remove "hbase.bucketcache.percentage.in.combinedcache". Simplifies config of block cache.
If you are using this config., after this patch goes in, it will be ignored. The L1 LruBlockCache
will be whatever hfile.block.cache.size is set to and the L2 BucketCache will be whatever
hbase.bucketcache.size is set to.



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