Jean-Daniel Cryans created HBASE-9038:
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Summary: Compaction WALEdit gives NPEs with Replication enabled
Key: HBASE-9038
URL: https://issues.apache.org/jira/browse/HBASE-9038
Project: HBase
Issue Type: Bug
Affects Versions: 0.95.1
Reporter: Jean-Daniel Cryans
Assignee: Jean-Daniel Cryans
Priority: Blocker
Fix For: 0.98.0, 0.95.2
If you enable replication, and get a compaction requested, you'll see this in
the logs:
{noformat}
2013-07-24 15:16:38,831 ERROR
[regionserver60020-smallCompactions-1374704194254]
regionserver.CompactSplitThread: Compaction failed Request =
regionName=TestTable,00000000000000000000057204,1374704192994.6bb7c58d1e6cc99fbfe04592e44fbc35.,
storeName=info, fileCount=4, fileSize=335.1m (115.4m, 115.4m, 69.0m, 35.2m),
priority=6, time=1374704194257521000
java.lang.NullPointerException
at
org.apache.hadoop.hbase.replication.regionserver.Replication.visitLogEntryBeforeWrite(Replication.java:215)
at
org.apache.hadoop.hbase.regionserver.wal.FSHLog.doWrite(FSHLog.java:1204)
at
org.apache.hadoop.hbase.regionserver.wal.FSHLog.append(FSHLog.java:890)
at
org.apache.hadoop.hbase.regionserver.wal.FSHLog.append(FSHLog.java:840)
at
org.apache.hadoop.hbase.regionserver.wal.HLogUtil.writeCompactionMarker(HLogUtil.java:262)
at
org.apache.hadoop.hbase.regionserver.HStore.writeCompactionWalRecord(HStore.java:1026)
at org.apache.hadoop.hbase.regionserver.HStore.compact(HStore.java:973)
at
org.apache.hadoop.hbase.regionserver.HRegion.compact(HRegion.java:1278)
at
org.apache.hadoop.hbase.regionserver.CompactSplitThread$CompactionRunner.run(CompactSplitThread.java:465)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:680)
{noformat}
It's a simple case of filtering METAFAMILY like this:
bq. if (kv.matchingFamily(WALEdit.METAFAMILY)) continue;
and add a unit test.
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