[HBASE-10792] RingBufferTruck does not release its payload

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.99.0, hbase-10070
• Fix Version/s: 0.99.0, hbase-10070
• Component/s: Performance, wal
• Hadoop Flags: Reviewed
• Assignee: Nick Dimiduk
• Reporter: Nick Dimiduk
• Created: 19/Mar/14 19:00
• Updated: 21/Feb/15 23:34
• Resolved: 20/Mar/14 00:00

Description

Run a write-heavy workload (PerfEval sequentialWrite) out of a trunk sandbox and watch as HBase eventually dies with an OOM: heap space. Examining the heap dump shows an extremely large retained size of KeyValue and RingBufferTrunk instances. By my eye, the default value of hbase.regionserver.wal.disruptor.event.count is too large for such a small default heap size, or the RBT instances need to release their payloads after consumers retrieve them.