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Posted to issues@hbase.apache.org by "Zhihong Yu (Updated) (JIRA)" <ji...@apache.org> on 2012/02/03 17:51:54 UTC
[jira] [Updated] (HBASE-5329) when client call lockRow,region
server may allocate duplicated lock id, this may cause that client is
blocked.
[ https://issues.apache.org/jira/browse/HBASE-5329?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Zhihong Yu updated HBASE-5329:
------------------------------
Priority: Critical (was: Major)
> when client call lockRow,region server may allocate duplicated lock id, this may cause that client is blocked.
> ---------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-5329
> URL: https://issues.apache.org/jira/browse/HBASE-5329
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 0.90.3
> Environment: Red Hat Enterprise Linux Server release 5.4
> Reporter: liaoxiangui
> Priority: Critical
>
> {code}
> protected long addRowLock(Integer r, HRegion region) throws LeaseStillHeldException
> {
> long lockId = -1L;
> lockId = rand.nextLong(); //!!!may generate duplicated id，bug?
> String lockName = String.valueOf(lockId);
> rowlocks.put(lockName, r);
> this.leases.createLease(lockName, new RowLockListener(lockName, region));
> return lockId;
> }
> {code}
> In addRowLock(),rand may generate duplicated lock id, it may cause regionserver throw exception(Leases$LeaseStillHeldException).The client will be blocked until old rowlock is released.
> {code}
> 2012-02-03 15:21:50,084 ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: Error obtaining row lock (fsOk: true)
> org.apache.hadoop.hbase.regionserver.Leases$LeaseStillHeldException
> at org.apache.hadoop.hbase.regionserver.Leases.createLease(Leases.java:150)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.addRowLock(HRegionServer.java:1986)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.lockRow(HRegionServer.java:1963)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:570)
> at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1039)
> {code}
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