Jean-Daniel Cryans created HBASE-8561:
-----------------------------------------
Summary: [replication] Don't instantiate a ReplicationSource if
the passed implementation isn't found
Key: HBASE-8561
URL: https://issues.apache.org/jira/browse/HBASE-8561
Project: HBase
Issue Type: Improvement
Affects Versions: 0.94.6.1
Reporter: Jean-Daniel Cryans
Fix For: 0.98.0, 0.94.8, 0.95.2
I was debugging a case where the region servers were dying with:
{noformat}
ABORTING region server someserver.com,60020,1368123702806: Writing replication
status
org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode
for
/hbase/replication/rs/someserver.com,60020,1368123702806/etcetcetc/somserver.com%2C60020%2C1368123702740.1368123705091
at org.apache.zookeeper.KeeperException.create(KeeperException.java:111)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
at org.apache.zookeeper.ZooKeeper.setData(ZooKeeper.java:1266)
at
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.setData(RecoverableZooKeeper.java:354)
at org.apache.hadoop.hbase.zookeeper.ZKUtil.setData(ZKUtil.java:846)
at org.apache.hadoop.hbase.zookeeper.ZKUtil.setData(ZKUtil.java:898)
at org.apache.hadoop.hbase.zookeeper.ZKUtil.setData(ZKUtil.java:892)
at
org.apache.hadoop.hbase.replication.ReplicationZookeeper.writeReplicationStatus(ReplicationZookeeper.java:558)
at
org.apache.hadoop.hbase.replication.regionserver.ReplicationSourceManager.logPositionAndCleanOldLogs(ReplicationSourceManager.java:154)
at
org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.shipEdits(ReplicationSource.java:638)
at
org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.run(ReplicationSource.java:387)
{noformat}
Turns out the problem really was:
{noformat}
2013-05-09 11:21:45,625 WARN
org.apache.hadoop.hbase.replication.regionserver.ReplicationSourceManager:
Passed replication source implementation throws errors, defaulting to
ReplicationSource
java.lang.ClassNotFoundException: Some.Other.ReplicationSource.Implementation
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:186)
at
org.apache.hadoop.hbase.replication.regionserver.ReplicationSourceManager.getReplicationSource(ReplicationSourceManager.java:324)
at
org.apache.hadoop.hbase.replication.regionserver.ReplicationSourceManager.addSource(ReplicationSourceManager.java:202)
at
org.apache.hadoop.hbase.replication.regionserver.ReplicationSourceManager.init(ReplicationSourceManager.java:174)
at
org.apache.hadoop.hbase.replication.regionserver.Replication.startReplicationService(Replication.java:171)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.startServiceThreads(HRegionServer.java:1583)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:1042)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:698)
at java.lang.Thread.run(Thread.java:722)
{noformat}
So I think instantiating a ReplicationSource here is wrong and makes it harder
to debug.
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