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From Stack <st...@duboce.net>
Subject Re: OutOfOrderScannerNextException
Date Tue, 08 Sep 2015 17:38:32 GMT
Are you seeing hiccups in the scans ahead of this exception -- scan next
retrying? Are the rows large? Try fetching in smaller batches, smaller than
100.
St.Ack

On Mon, Sep 7, 2015 at 3:56 AM, Li Li <fancyerii@gmail.com> wrote:

> I am using titan which use hbase as it's storage engine. The hbase
> version is 1.0.0-cdh5.4.4.
> it's a full table scan over a large table. Is there any configuration
> I can change to tackle this problem.
> The exception stack is:
>
> Exception in thread "main" java.lang.RuntimeException:
> org.apache.hadoop.hbase.DoNotRetryIOException: Failed after retry of
> OutOfOrderScannerNextException: was there a rpc timeout?
>
>         at
> org.apache.hadoop.hbase.client.AbstractClientScanner$1.hasNext(AbstractClientScanner.java:94)
>
>         at
> com.google.common.collect.Iterators$8.computeNext(Iterators.java:686)
>
>         at
> com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
>
>         at
> com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
>
>         at
> com.thinkaurelius.titan.diskstorage.hbase.HBaseKeyColumnValueStore$RowIterator.hasNext(HBaseKeyColumnValueStore.java:289)
>
>         at
> com.thinkaurelius.titan.graphdb.database.StandardTitanGraph$2.hasNext(StandardTitanGraph.java:343)
>
>         at
> com.thinkaurelius.titan.graphdb.transaction.VertexIterable$1.nextVertex(VertexIterable.java:34)
>
>         at
> com.thinkaurelius.titan.graphdb.transaction.VertexIterable$1.next(VertexIterable.java:55)
>
>         at
> com.thinkaurelius.titan.graphdb.transaction.VertexIterable$1.next(VertexIterable.java:27)
>
>         at
> com.google.common.collect.Iterators$8.computeNext(Iterators.java:687)
>
>         at
> com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
>
>         at
> com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
>
>         at
> com.mobvoi.knowledgegraph.storage.v2.music.DumpAllNodesAndEdges.main(DumpAllNodesAndEdges.java:34)
>
> Caused by: org.apache.hadoop.hbase.DoNotRetryIOException: Failed after
> retry of OutOfOrderScannerNextException: was there a rpc timeout?
>
>         at
> org.apache.hadoop.hbase.client.ClientScanner.next(ClientScanner.java:384)
>
>         at
> org.apache.hadoop.hbase.client.AbstractClientScanner$1.hasNext(AbstractClientScanner.java:91)
>
>         ... 12 more
>
> Caused by:
> org.apache.hadoop.hbase.exceptions.OutOfOrderScannerNextException:
> org.apache.hadoop.hbase.exceptions.OutOfOrderScannerNextException:
> Expected nextCallSeq: 2 But the nextCallSeq
>
> got from client: 1; request=scanner_id: 11996 number_of_rows: 100
> close_scanner: false next_call_seq: 1
>
>         at
> org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:2144)
>
>         at
> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:31443)
>
>         at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2035)
>
>         at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:107)
>
>         at
> org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:130)
>
>         at
> org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:107)
>
>         at java.lang.Thread.run(Thread.java:745)
>
>
>         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
>
>         at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
>
>         at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
>
>         at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
>
>         at
> org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106)
>
>         at
> org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:95)
>
>         at
> org.apache.hadoop.hbase.protobuf.ProtobufUtil.getRemoteException(ProtobufUtil.java:284)
>
>         at
> org.apache.hadoop.hbase.client.ScannerCallable.call(ScannerCallable.java:198)
>
>         at
> org.apache.hadoop.hbase.client.ScannerCallable.call(ScannerCallable.java:57)
>
>         at
> org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:114)
>
>         at
> org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:90)
>
>         at
> org.apache.hadoop.hbase.client.ClientScanner.next(ClientScanner.java:336)
>

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