David Medinets created ACCUMULO-693:
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Summary: Too Many "Problem Renewing Lease" Messages
Key: ACCUMULO-693
URL: https://issues.apache.org/jira/browse/ACCUMULO-693
Project: Accumulo
Issue Type: Improvement
Affects Versions: 1.5.0
Reporter: David Medinets
Priority: Minor
I restarted Hadoop and reloaded my Accumulo monitor page. Then the exception
below starting appearing in my tserver log - a lot. Does it make sense to try
three times with increasing pauses between the attempts? Should the web page
timeout an display an error message?
15 02:14:32,694 [hdfs.DFSClient] WARN : Problem renewing lease for
DFSClient_134996827
org.apache.hadoop.ipc.RemoteException:
org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot renew lease
for DFSClient_134996827. Name node is in safe mode.
The ratio of reported blocks 0.8750 has not reached the threshold 0.9990. Safe
mode will be turned off automatically.
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.renewLease(FSNamesystem.java:1978)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.renewLease(NameNode.java:550)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:508)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)
at org.apache.hadoop.ipc.Client.call(Client.java:740)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220)
at $Proxy0.renewLease(Unknown Source)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
at $Proxy0.renewLease(Unknown Source)
at
org.apache.hadoop.hdfs.DFSClient$LeaseChecker.renew(DFSClient.java:1057)
at
org.apache.hadoop.hdfs.DFSClient$LeaseChecker.run(DFSClient.java:1069)
at java.lang.Thread.run(Thread.java:722)
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