liang xie created HBASE-6998:
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Summary: Uncatched exception in main() makes the
HMaster/HRegionServer process suspend
Key: HBASE-6998
URL: https://issues.apache.org/jira/browse/HBASE-6998
Project: HBase
Issue Type: Bug
Components: master, regionserver
Affects Versions: 0.94.2, 0.96.0
Environment: CentOS6.2 + CDH4.1 HDFS + hbase0.94.2
Reporter: liang xie
Assignee: liang xie
I am trying HDFS QJM feature in our test env. after a misconfig, i found the
HMaster/HRegionServer process still up if the main thread is dead. Here is the
stack trace:
xception in thread "main" java.net.UnknownHostException: unknown host: cluster1
at org.apache.hadoop.ipc.Client$Connection.<init>(Client.java:214)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1196)
at org.apache.hadoop.ipc.Client.call(Client.java:1050)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
at $Proxy8.getProtocolVersion(Unknown Source)
at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:396)
at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:379)
at
org.apache.hadoop.hdfs.DFSClient.createRPCNamenode(DFSClient.java:119)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:238)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:203)
at
org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:89)
at
org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1386)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:66)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1404)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:254)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:123)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.startRegionServer(HRegionServer.java:3647)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.startRegionServer(HRegionServer.java:3631)
at
org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.start(HRegionServerCommandLine.java:61)
at
org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.run(HRegionServerCommandLine.java:75)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at
org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:76)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.main(HRegionServer.java:3691)
Then i need to kill the process manually each time, so annoyed.
After applied the attached patch, the process will exist as expected, then i am
happy again :)
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