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Hadoop QA commented on HBASE-4890: ---------------------------------- -1 overall. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12517500/4890-v3.txt against trunk revision . +1 @author. The patch does not contain any @author tags. -1 tests included. The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch. -1 javadoc. The javadoc tool appears to have generated -129 warning messages. +1 javac. The applied patch does not increase the total number of javac compiler warnings. -1 findbugs. The patch appears to introduce 154 new Findbugs (version 1.3.9) warnings. +1 release audit. The applied patch does not increase the total number of release audit warnings. +1 core tests. The patch passed unit tests in . Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/1131//testReport/ Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/1131//artifact/trunk/patchprocess/newPatchFindbugsWarnings.html Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/1131//console This message is automatically generated. > fix possible NPE in HConnectionManager > -------------------------------------- > > Key: HBASE-4890 > URL: https://issues.apache.org/jira/browse/HBASE-4890 > Project: HBase > Issue Type: Bug > Affects Versions: 0.92.0 > Reporter: Jonathan Hsieh > Priority: Blocker > Fix For: 0.92.1 > > Attachments: 4890-v2.txt, 4890-v3.txt, 4890-v3.txt, 4890-v3.txt, > 4890.txt, splits.txt > > > I was running YCSB against a 0.92 branch and encountered this error message: > {code} > 11/11/29 08:47:16 WARN client.HConnectionManager$HConnectionImplementation: > Failed all from > region=usertable,user3917479014967760871,1322555655231.f78d161e5724495a9723bcd972f97f41., > hostname=c0316.hal.cloudera.com, port=57020 > java.util.concurrent.ExecutionException: java.lang.RuntimeException: > java.lang.NullPointerException > at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222) > at java.util.concurrent.FutureTask.get(FutureTask.java:83) > at > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.processBatchCallback(HConnectionManager.java:1501) > at > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.processBatch(HConnectionManager.java:1353) > at org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:898) > at org.apache.hadoop.hbase.client.HTable.doPut(HTable.java:775) > at org.apache.hadoop.hbase.client.HTable.put(HTable.java:750) > at com.yahoo.ycsb.db.HBaseClient.update(Unknown Source) > at com.yahoo.ycsb.DBWrapper.update(Unknown Source) > at com.yahoo.ycsb.workloads.CoreWorkload.doTransactionUpdate(Unknown > Source) > at com.yahoo.ycsb.workloads.CoreWorkload.doTransaction(Unknown Source) > at com.yahoo.ycsb.ClientThread.run(Unknown Source) > Caused by: java.lang.RuntimeException: java.lang.NullPointerException > at > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getRegionServerWithoutRetries(HConnectionManager.java:1315) > at > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$3.call(HConnectionManager.java:1327) > at > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$3.call(HConnectionManager.java:1325) > at java.util.concurrent.FutureTask$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:619) > Caused by: java.lang.NullPointerException > at > org.apache.hadoop.hbase.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:158) > at $Proxy4.multi(Unknown Source) > at > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$3$1.call(HConnectionManager.java:1330) > at > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$3$1.call(HConnectionManager.java:1328) > at > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getRegionServerWithoutRetries(HConnectionManager.java:1309) > ... 7 more > {code} > It looks like the NPE is caused by server being null in the MultiRespone > call() method. > {code} > public MultiResponse call() throws IOException { > return getRegionServerWithoutRetries( > new ServerCallable<MultiResponse>(connection, tableName, null) { > public MultiResponse call() throws IOException { > return server.multi(multi); > } > @Override > public void connect(boolean reload) throws IOException { > server = > connection.getHRegionConnection(loc.getHostname(), > loc.getPort()); > } > } > ); > {code} -- This message is automatically generated by JIRA. 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