Jeongin Ju created HADOOP-17859:
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Summary: DNS Query on DNS Registry got connection timed out at
times.
Key: HADOOP-17859
URL: https://issues.apache.org/jira/browse/HADOOP-17859
Project: Hadoop Common
Issue Type: Bug
Components: registry
Reporter: Jeongin Ju
Fix For: 3.1.2
DNS query on YARN Registry DNS got connection timed out at times.
After checking logs on registry dns, we found the cause that size of UDP
Response is greater than Preallocated Byte buffer(4096)
We added failsafe case by returning input query with TC flag so that client can
know they should retried using TCP protocol.
We found the problem and patched our cluster on 3.1.2 but it seems trunk still
has the same problem.
I attached patch based on the trunk.
Thanks!
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