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https://issues.apache.org/jira/browse/HADOOP-14198?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yongjun Zhang resolved HADOOP-14198.
------------------------------------
Resolution: Duplicate
> Should have a way to let PingInputStream to abort
> -------------------------------------------------
>
> Key: HADOOP-14198
> URL: https://issues.apache.org/jira/browse/HADOOP-14198
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Yongjun Zhang
>
> We observed a case that RPC call get stuck, since PingInputStream does the
> following
> {code}
> /** This class sends a ping to the remote side when timeout on
> * reading. If no failure is detected, it retries until at least
> * a byte is read.
> */
> private class PingInputStream extends FilterInputStream {
> {code}
> It seems that in this case no data is ever received, and it keeps pinging.
> Should we ping forever here? Maybe we should introduce a config to stop the
> ping after pinging for certain number of times, and report back timeout, let
> the caller to retry the RPC?
> Wonder if there is chance the RPC get dropped somehow by the server so no
> response is ever received.
> See
> {code}
> Thread 16127: (state = BLOCKED)
>
> - sun.nio.ch.SocketChannelImpl.readerCleanup() @bci=6, line=279 (Compiled
> frame)
> - sun.nio.ch.SocketChannelImpl.read(java.nio.ByteBuffer) @bci=205, line=390
> (Compiled frame)
> -
> org.apache.hadoop.net.SocketInputStream$Reader.performIO(java.nio.ByteBuffer)
> @bci=5, line=57 (Compiled frame)
> - org.apache.hadoop.net.SocketIOWithTimeout.doIO(java.nio.ByteBuffer, int)
> @bci=35, line=142 (Compiled frame)
> - org.apache.hadoop.net.SocketInputStream.read(java.nio.ByteBuffer) @bci=6,
> line=161 (Compiled frame)
> - org.apache.hadoop.net.SocketInputStream.read(byte[], int, int) @bci=7,
> line=131 (Compiled frame)
> - java.io.FilterInputStream.read(byte[], int, int) @bci=7, line=133
> (Compiled frame)
> - java.io.FilterInputStream.read(byte[], int, int) @bci=7, line=133
> (Compiled frame)
> - org.apache.hadoop.ipc.Client$Connection$PingInputStream.read(byte[], int,
> int) @bci=4, line=521 (Compiled frame)
> - java.io.BufferedInputStream.fill() @bci=214, line=246 (Compiled frame)
>
> - java.io.BufferedInputStream.read() @bci=12, line=265 (Compiled frame)
>
> - java.io.DataInputStream.readInt() @bci=4, line=387 (Compiled frame)
>
> - org.apache.hadoop.ipc.Client$Connection.receiveRpcResponse() @bci=19,
> line=1081 (Compiled frame)
> - org.apache.hadoop.ipc.Client$Connection.run() @bci=62, line=976 (Compiled
> frame)
> {code}
>
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