Erik Krogen created HDFS-13872:
----------------------------------
Summary: Only ClientProtocol should perform msync wait
Key: HDFS-13872
URL: https://issues.apache.org/jira/browse/HDFS-13872
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Erik Krogen
Currently the implementation of msync added in HDFS-13767 waits until the
server has caught up to the client-specified transaction ID regardless of what
the inbound RPC is. This particularly causes problems for
ObserverReadProxyProvider (see HDFS-13779) when we try to fetch the state from
an observer/standby; this should be a quick operation, but it has to wait for
the node to catch up to the most current state. I initially thought all
{{HAServiceProtocol}} methods should thus be excluded from the wait period, but
actually I think the right approach is that _only_ {{ClientProtocol}} methods
should be subjected to the wait period. I propose that we can do this via an
annotation on client protocol which can then be checked within {{ipc.Server}}.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
