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https://issues.apache.org/jira/browse/HADOOP-18143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17499112#comment-17499112
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Ayush Saxena commented on HADOOP-18143:
---------------------------------------
Did a git blame on ProtobufRpcEngine Class from where the code was extracted.
Considering this exist there as well
[~kihwal] / [~daryn] in case you folks have any feedback or pointers here...
> toString method of RpcCall throws IllegalArgumentException
> ----------------------------------------------------------
>
> Key: HADOOP-18143
> URL: https://issues.apache.org/jira/browse/HADOOP-18143
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: András Győri
> Assignee: András Győri
> Priority: Critical
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> We have observed breaking tests such as TestApplicationACLs. We have located
> the root cause, which is HADOOP-18082. It seems that there is a concurrency
> issue within ProtobufRpcEngine2. When using a debugger, the missing fields
> are there, hence the suspicion of concurrency problem. The stack trace:
> {noformat}
> java.lang.IllegalArgumentException
> at java.nio.Buffer.position(Buffer.java:244)
> at
> org.apache.hadoop.ipc.RpcWritable$ProtobufWrapper.readFrom(RpcWritable.java:131)
> at org.apache.hadoop.ipc.RpcWritable$Buffer.getValue(RpcWritable.java:232)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine2$RpcProtobufRequest.getRequestHeader(ProtobufRpcEngine2.java:645)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine2$RpcProtobufRequest.toString(ProtobufRpcEngine2.java:663)
> at java.lang.String.valueOf(String.java:3425)
> at java.lang.StringBuilder.append(StringBuilder.java:516)
> at org.apache.hadoop.ipc.Server$RpcCall.toString(Server.java:1328)
> at java.lang.String.valueOf(String.java:3425)
> at java.lang.StringBuilder.append(StringBuilder.java:516)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:3097){noformat}
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