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https://issues.apache.org/jira/browse/HBASE-4181?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ted Yu updated HBASE-4181:
--------------------------
Affects Version/s: (was: 0.90.4)
The cited code doesn't apply to 0.90 branch.
> HConnectionManager can't find cached HRegionInterface makes client very slow
> ----------------------------------------------------------------------------
>
> Key: HBASE-4181
> URL: https://issues.apache.org/jira/browse/HBASE-4181
> Project: HBase
> Issue Type: Bug
> Components: client
> Affects Versions: 0.92.0
> Reporter: Liu Jia
> Assignee: Liu Jia
> Priority: Critical
> Labels: HConnectionManager
> Fix For: 0.92.0
>
> Attachments: HBASE-4181-trunk-v2.patch, HBASE-4181-trunk-v3.patch,
> HBASE-4181.patch, HConnectionManager.patch
>
>
> HRegionInterface getHRegionConnection(final String hostname,
> final int port, final InetSocketAddress isa, final boolean master)
> throws IOException
> /////////////////////////
> String rsName = isa != null ? isa.toString() : Addressing
> .createHostAndPortStr(hostname, port);
>
> ////here,if isa is null, the Addressing created a address like "node41:60010"
> ////should
> use "isa.toString():new InetSocketAddress(hostname, port).toString();"
> ////instead
> of "Addressing.createHostAndPortStr(hostname, port);"
> server = this.servers.get(rsName);
> if (server == null) {
> // create a unique lock for this RS (if necessary)
> this.connectionLock.putIfAbsent(rsName, rsName);
> // get the RS lock
> synchronized (this.connectionLock.get(rsName)) {
> // do one more lookup in case we were stalled above
> server = this.servers.get(rsName);
> if (server == null) {
> try {
> if (clusterId.hasId()) {
> conf.set(HConstants.CLUSTER_ID, clusterId.getId());
> }
> // Only create isa when we need to.
> InetSocketAddress address = isa != null ? isa
> : new InetSocketAddress(hostname, port);
> // definitely a cache miss. establish an RPC for this RS
> server = (HRegionInterface) HBaseRPC.waitForProxy(
> serverInterfaceClass, HRegionInterface.VERSION, address,
> this.conf, this.maxRPCAttempts, this.rpcTimeout,
> this.rpcTimeout);
> this.servers.put(address.toString(), server);
>
> ////but here address.toString() send an address like
> "node41/10.61.2l.171:60010
> ////so this method can never get cached address and make client request very
> slow due to it's synchronized.
>
>
> } catch (RemoteException e) {
> LOG.warn("RemoteException connecting to RS", e);
> // Throw what the RemoteException was carrying.
> throw RemoteExceptionHandler.decodeRemoteException(e);
> }
> }
> }
> ///////////////////////
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