How-to: resolve regionserver died with "No lease on /hbase/oldWALs/..."

Error Log from died regionserver:

 2015-06-11 16:23:03,072 ERROR [regionserver/slave04/172.31.34.64:60020] regionserver.HRegionServer: Shutdown / close of WAL failed: org.apache.hadoop.hdfs.server.namen
ode.LeaseExpiredException: No lease on /hbase/oldWALs/slave04%2C60020%2C1434005076158.default.1434008679797 (inode 120999): File is not open for writing. Holder DFSCli
ent_NONMAPREDUCE_-2110154852_1 does not have any open files.
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:3334)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalDatanode(FSNamesystem.java:3237)
at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getAdditionalDatanode(NameNodeRpcServer.java:647)
at org.apache.hadoop.hdfs.server.namenode.AuthorizationProviderProxyClientProtocol.getAdditionalDatanode(AuthorizationProviderProxyClientProtocol.java:204)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getAdditionalDatanode(ClientNamenodeProtocolServerSideTranslatorPB.java:499)
at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:587)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1026)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2013)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2009)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1614)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2007) 

Resolustion:

Need to add property "dfs.datanode.max.transfer.threads" in hdfs-site.xml, the default value is 4096(In most time, this value is enough for hbase jobs, refer https://issues.apache.org/jira/browse/HDFS-1861), now set to 8192 or higher. 

        <property>
                <name>dfs.datanode.max.transfer.threads</name>
                <value>8192</value>
        </property>