Data Services
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Tuning Region Server

To tune garbage collection (GC) in HBase Region Server for stability, make the following configuration changes:

  1. Specify the following configurations in the HBASE_REGIONSERVER_OPTS configuration option in the /conf/ file.

    -Xmn2500m (depends on MAX HEAP SIZE, but should not be less than 1g and more than 4g)
  2. Make sure that the block cache size and the memstore size combined do not significantly exceed 0.5*MAX_HEAP, which is defined in the HBASE_HEAP_SIZE configuration option of the /conf/ file.