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Upgrade from CDH 4.6 to 4.7, HBase RegionServers will not start: IndexedWALEditCodec not found

avatar
Rising Star

I have a serious problem. I used Parcels and upgraded (distributed) CDH from 4.6 to 4.7. However, now HBase RegionServers will not start. I receive the following error, any help will be appreciated:

 

Region server nodehdp05,60020,1403044475111 reported a fatal error:
ABORTING region server nodehdp05,60020,1403044475111: Unhandled exception: Exception in createWriter
Cause:
java.io.IOException: Exception in createWriter
at org.apache.hadoop.hbase.regionserver.wal.HLogFileSystem.createWriter(HLogFileSystem.java:66)
at org.apache.hadoop.hbase.regionserver.wal.HLog.createWriterInstance(HLog.java:709)
at org.apache.hadoop.hbase.regionserver.wal.HLog.rollWriter(HLog.java:629)
at org.apache.hadoop.hbase.regionserver.wal.HLog.rollWriter(HLog.java:573)
at org.apache.hadoop.hbase.regionserver.wal.HLog.<init>(HLog.java:454)
at org.apache.hadoop.hbase.regionserver.wal.HLog.<init>(HLog.java:378)
at org.apache.hadoop.hbase.regionserver.HRegionServer.instantiateHLog(HRegionServer.java:1446)
at org.apache.hadoop.hbase.regionserver.HRegionServer.setupWALAndReplication(HRegionServer.java:1417)
at org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:1100)
at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:753)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.io.IOException: cannot get log writer
at org.apache.hadoop.hbase.regionserver.wal.HLog.createWriter(HLog.java:802)
at org.apache.hadoop.hbase.regionserver.wal.HLogFileSystem.createWriter(HLogFileSystem.java:60)
... 10 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class org.apache.hadoop.hbase.regionserver.wal.IndexedWALEditCodec not found
1 ACCEPTED SOLUTION

avatar
Rising Star

It seems that during the upgrade from CDH 4.6 to 4.7 the phoenix jar file was deleted. I should have checked when I saw this in the exception: Class org.apache.hadoop.hbase.regionserver.wal.IndexedWALEditCodec not found. I replaced the phoenix jar file and added back the property to the hbase-site.xml in CM and restarted HBase - it works!

View solution in original post

2 REPLIES 2

avatar
Rising Star

This problem has been resolved:

 

We were using a version of Phoenix with the following configuration in the RegionServer Advanced Configuration Snippet (Safety Valve) for hbase-site.xml:

 

<property>

  <name>hbase.regionserver.wal.codec</name>

<value>org.apache.hadoop.hbase.regionserver.wal.IndexedWALEditCodec</value>

</property>

 

The HBase ResionServers were not able to start with this property. For now I’ve taken the property out of the hbase-site.xml and we’ll have to find another way to support Phoenix. 

avatar
Rising Star

It seems that during the upgrade from CDH 4.6 to 4.7 the phoenix jar file was deleted. I should have checked when I saw this in the exception: Class org.apache.hadoop.hbase.regionserver.wal.IndexedWALEditCodec not found. I replaced the phoenix jar file and added back the property to the hbase-site.xml in CM and restarted HBase - it works!