Infinite loop in chooseTarget
-----------------------------
Key: HADOOP-1009
URL: https://issues.apache.org/jira/browse/HADOOP-1009
Project: Hadoop
Issue Type: Bug
Reporter: dhruba borthakur
I am seeing the namenode hangs with 99% CPU usage. The stack trace invariably
shows the following stack trace.
- java.util.Random.next(int) @bci=35, line=141 (Compiled frame; information
may be imprecise)
- java.util.Random.nextInt(int) @bci=40, line=255 (Compiled frame)
- org.apache.hadoop.dfs.FSNamesystem$Replicator.chooseRandom(int,
org.apache.hadoop.dfs.DatanodeDescriptor[], java.util.List, long, int,
java.util.List) @bci=7, line=2986 (Interpreted frame)
- org.apache.hadoop.dfs.FSNamesystem$Replicator.chooseTarget(int,
org.apache.hadoop.dfs.DatanodeDescriptor,
org.apache.hadoop.dfs.DatanodeDescriptor[], java.util.List, long, int,
java.util.List) @bci=211, line=2810 (Interpreted frame)
- org.apache.hadoop.dfs.FSNamesystem$Replicator.chooseTarget(int,
org.apache.hadoop.dfs.DatanodeDescriptor, java.util.List, java.util.List, long)
@bci=141, line=2764 (Interpreted frame)
- org.apache.hadoop.dfs.FSNamesystem$Replicator.chooseTarget(int,
org.apache.hadoop.dfs.DatanodeDescriptor, java.util.List, long) @bci=25,
line=2716 (Interpreted frame)
- org.apache.hadoop.dfs.FSNamesystem.startFile(org.apache.hadoop.io.UTF8,
org.apache.hadoop.io.UTF8, org.apache.hadoop.io.UTF8, boolean, short, long)
@bci=579, line=709 (Interpreted frame)
- org.apache.hadoop.dfs.NameNode.create(java.lang.String, java.lang.String,
java.lang.String, boolean, short, long) @bci=97, line=270 (Interpreted frame)
- sun.reflect.GeneratedMethodAccessor5.invoke(java.lang.Object,
java.lang.Object[]) @bci=238 (Interpreted frame)
- sun.reflect.DelegatingMethodAccessorImpl.invoke(java.lang.Object,
java.lang.Object[]) @bci=6, line=25 (Interpreted frame)
- java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[])
@bci=111, line=585 (Interpreted frame)
- org.apache.hadoop.ipc.RPC$Server.call(org.apache.hadoop.io.Writable)
@bci=64, line=337 (Compiled frame)
- org.apache.hadoop.ipc.Server$Handler.run() @bci=351, line=538 (Interpreted
frame)
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