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From Mike Drob <mad...@cloudera.com>
Subject Re: why a error about replicated
Date Thu, 22 Jan 2015 16:00:08 GMT
Has this error come up before? Is there room for us to intercept that stack
trace and provide a "check that HDFS has space left" message? This might be
especially relevant after we;ve removed the hadoop info box on the monitor.

On Thu, Jan 22, 2015 at 8:30 AM, Josh Elser <josh.elser@gmail.com> wrote:

> How much free space do you still have in HDFS? If hdfs doesn't have enough
> free space to make the file, I believe you'll see the car that you have
> outlined. The way we create the file will also end up requiring at least
> one GB with the default configuration.
>
> Also make sure to take into account any reserved percent of hdfs when
> considering the hdfs usage.
> On Jan 22, 2015 1:46 AM, "Lu.Qin" <luq.java@gmail.com> wrote:
>
>>
>> Hi,I have a Accumulo clusters and it run 10 days ,but it show me many
>> errors now.
>>
>> 2015-01-22 13:04:21,161 [hdfs.DFSClient] WARN : Error while syncing
>> org.apache.hadoop.ipc.RemoteException(java.io.IOException): File
>> /accumulo/wal/+9997/226dce4f-4e14-4704-b811-532afe0b0fb3 could only be
>> replicated to 0 nodes instead
>>  of minReplication (=1).  There are 3 datanode(s) running and no node(s)
>> are excluded in this operation.
>>         at
>> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget(BlockManager.java:1471)
>>         at
>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2791)
>>         at
>> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:606)
>>         at
>> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:455)
>>         at
>> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
>>         at
>> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:585)
>>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:928)
>>         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)
>>
>>         at org.apache.hadoop.ipc.Client.call(Client.java:1411)
>>         at org.apache.hadoop.ipc.Client.call(Client.java:1364)
>>         at
>> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
>>         at com.sun.proxy.$Proxy20.addBlock(Unknown Source)
>>         at sun.reflect.GeneratedMethodAccessor16.invoke(Unknown Source)
>>         at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>         at java.lang.reflect.Method.invoke(Method.java:606)
>>         at
>> org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:187)
>>         at
>> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
>>         at com.sun.proxy.$Proxy20.addBlock(Unknown Source)
>>         at
>> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:368)
>>         at
>> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.locateFollowingBlock(DFSOutputStream.java:1449)
>>         at
>> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1270)
>>         at
>> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:526)
>>
>> I use hadoop fs to put a file into hadoop ,and it works good,and the file
>> has 2 replicates.Why accumulo can not work ?
>>
>> And I see there are so many file only 0B in /accumulo/wal/***/,why?
>>
>> Thanks.
>>
>

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