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From Sean Pines <SPi...@potomacfusion.com>
Subject Table could only be replicated to 0 nodes, instead of 1
Date Tue, 19 Jun 2012 21:04:40 GMT
Hey all,

I was recently trying to import a large amount of data into Accumulo. Around 13.63M entries
I got the error below:

org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /accumulo/tables/!0/table_info/A00000ox.rf_tmp
could only be replicated to 0 nodes, instead of 1
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1520)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:665)
        at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:557)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1434)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1430)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1157)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1428)

        org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /accumulo/tables/!0/table_info/A00000ox.rf_tmp
could only be replicated to 0 nodes, instead of 1
               at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1520)
               at org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:665)
               at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
               at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
               at java.lang.reflect.Method.invoke(Method.java:597)
               at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:557)
               at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1434)
               at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1430)
               at java.security.AccessController.doPrivileged(Native Method)
               at javax.security.auth.Subject.doAs(Subject.java:396)
               at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1157)
               at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1428)

               at org.apache.hadoop.ipc.Client.call(Client.java:1107)
               at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:226)
               at $Proxy0.addBlock(Unknown Source)
               at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)
               at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
               at java.lang.reflect.Method.invoke(Method.java:597)
               at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
               at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
               at $Proxy0.addBlock(Unknown Source)
               at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:3553)
               at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:3421)
               at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2100(DFSClient.java:2627)
               at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2822)

I'm currently testing on a single node VM. From the Accumulo Overview it says that only 46.30M
of the disk has been used and the NameNode still has 3.87G of unreplicated capacity (1.19%
used). I can't say I'm terribly familiar with hadoop and googling around for this error didn't
come up with anything. Has anyone ran into this before and know what is causing it?

Thanks!
Sean

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