[
https://issues.apache.org/jira/browse/HDFS-13331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16420913#comment-16420913
]
Plamen Jeliazkov commented on HDFS-13331:
-----------------------------------------
I agree we should try to leverage {{Connection}} objects and that ThreadLocal
would be hacky. I've taken the {{Connection}} approach but I am currently
hitting an issue in that DFSClients re-use {{Connection}}s, but with multiple
DFSClients having their own {{AlignmentContext}} then only the first
instantiated {{Connection}} will have its {{AlignmentContext}} updated.
I am thinking now that it needs to live in the {{Call}} object instead... I
will continue experimenting however and report next week.
Also, no need to apologize. We are on the same page / team here. :) In fact its
probably more fitting to address this as part of this JIRA then the last anyway
as now its easier to focus on the client side logic.
> Add lastSeenStateId to RpcRequestHeader.
> ----------------------------------------
>
> Key: HDFS-13331
> URL: https://issues.apache.org/jira/browse/HDFS-13331
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: HDFS-12943
> Reporter: Plamen Jeliazkov
> Assignee: Plamen Jeliazkov
> Priority: Major
> Attachments: HDFS-13331-HDFS-12943.002.patch,
> HDFS-13331-HDFS-12943.003..patch, HDFS-13331.trunk.001.patch,
> HDFS_13331.trunk.000.patch
>
>
> HDFS-12977 added a stateId into the RpcResponseHeader which is returned by
> NameNode and stored by DFSClient.
> This JIRA is to followup on that work and have the DFSClient send their
> stored "lastSeenStateId" in the RpcRequestHeader so that ObserverNodes can
> then compare with their own and act accordingly.
> This JIRA work focuses on just the part of making DFSClient send their state
> through RpcRequestHeader.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
