Mayur created HBASE-9109:
----------------------------
Summary: Null pointer exception while invoking coprocessor.
Key: HBASE-9109
URL: https://issues.apache.org/jira/browse/HBASE-9109
Project: HBase
Issue Type: Bug
Components: Client, Coprocessors
Affects Versions: 0.98.0
Environment: OS - CentOS release 6.2 (Final)
JAVA - java version "1.6.0_22"
OpenJDK Runtime Environment (IcedTea6 1.10.4)
(rhel-1.41.1.10.4.el6-x86_64)
OpenJDK 64-Bit Server VM (build 20.0-b11, mixed mode)
Configuration: 3 node cluster with Hadoop-3.0
Reporter: Mayur
Fix For: 0.98.0
This problem is observed when region server dies while an endpoint coprocessor
is executing. On the client side channel.getLastRegion() returns null and we
get null pointer exception while updating result map.
Following stack-trace is seen on client:
Caused by: java.lang.NullPointerException
at org.apache.hadoop.hbase.util.Bytes.compareTo(Bytes.java:981)
at
org.apache.hadoop.hbase.util.Bytes$ByteArrayComparator.compare(Bytes.java:128)
at
org.apache.hadoop.hbase.util.Bytes$ByteArrayComparator.compare(Bytes.java:119)
at java.util.TreeMap.put(TreeMap.java:530)
at java.util.Collections$SynchronizedMap.put(Collections.java:1979)
at org.apache.hadoop.hbase.client.HTable$17.update(HTable.java:1372)
at org.apache.hadoop.hbase.client.HTable$18.call(HTable.java:1401)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
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