Todd Lipcon created HADOOP-8397:
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Summary: NPE thrown when IPC layer gets an EOF reading a response
Key: HADOOP-8397
URL: https://issues.apache.org/jira/browse/HADOOP-8397
Project: Hadoop Common
Issue Type: Bug
Components: ipc
Affects Versions: 2.0.0
Reporter: Todd Lipcon
Priority: Critical
When making a call on an IPC connection where the other end has shut down, I
see the following exception:
Caused by: java.lang.NullPointerException
at
org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:852)
at org.apache.hadoop.ipc.Client$Connection.run(Client.java:781)
from the lines:
{code}
RpcResponseHeaderProto response =
RpcResponseHeaderProto.parseDelimitedFrom(in);
int callId = response.getCallId();
{code}
This is because parseDelimitedFrom() returns null in the case that the next
thing to be read on the stream is an EOF.
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