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https://issues.apache.org/jira/browse/GIRAPH-1100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15617368#comment-15617368
]
Yu Gan commented on GIRAPH-1100:
--------------------------------
Also the scenario I encountered is: removeVertexRequest() and
removeEdgesRequest() for the same vertex, the SendPartitionMutationsRequest()
throws exception:
2016-10-29 03:22:23,393 FATAL [netty-server-worker-14]
org.apache.giraph.graph.GraphTaskManager: uncaughtException:
OverrideExceptionHandler on thread netty-server-worker-14, msg = readFields:
Already has vertex id 3040000117619, exiting...
java.lang.IllegalStateException: readFields: Already has vertex id 3040000117619
at
org.apache.giraph.comm.requests.SendPartitionMutationsRequest.readFieldsRequest(SendPartitionMutationsRequest.java:98)
> Multiple mutation requests to one vertex result in failure
> ----------------------------------------------------------
>
> Key: GIRAPH-1100
> URL: https://issues.apache.org/jira/browse/GIRAPH-1100
> Project: Giraph
> Issue Type: Bug
> Reporter: Sergey Edunov
> Assignee: Sergey Edunov
>
> The scenario is simple:
> You send multiple addEdgeRequest() where the source vertex of new edge does
> not exist (typical scenario for adding reverse edges). If two of these
> requests happen to arrive in the single SendPartitionMutationsRequest, giraph
> is unable to handle it:
> FATAL 2016-07-26 17:59:09,563 [netty-server-worker-6]
> org.apache.giraph.graph.GraphTaskManager - uncaughtException:
> OverrideExceptionHandler on thread netty-server-worker-6, msg = readFields:
> Already has vertex id 977939745592684, exiting...
> java.lang.IllegalStateException: readFields: Already has vertex id
> 977939745592684
> at
> org.apache.giraph.comm.requests.SendPartitionMutationsRequest.readFieldsRequest(SendPartitionMutationsRequest.java:98)
> at
> org.apache.giraph.comm.requests.WritableRequest.readFields(WritableRequest.java:118)
> at
> org.apache.giraph.utils.RequestUtils.decodeWritableRequest(RequestUtils.java:52)
> at
> org.apache.giraph.comm.netty.handler.RequestDecoder.channelRead(RequestDecoder.java:89)
> at
> io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:338)
> at
> io.netty.channel.DefaultChannelHandlerContext.access$700(DefaultChannelHandlerContext.java:29)
> at
> io.netty.channel.DefaultChannelHandlerContext$8.run(DefaultChannelHandlerContext.java:329)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:354)
> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:353)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101)
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