[jira] [Commented] (KUDU-2612) Implement multi-row transactions

["ASF subversion and git services (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KUDU-2612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17188838#comment-17188838 ] 

ASF subversion and git services commented on KUDU-2612:
-------------------------------------------------------

Commit 68ee03c2bd0bae950c08582910e675cda54b6ca7 in kudu's branch refs/heads/master from Andrew Wong
[ https://gitbox.apache.org/repos/asf?p=kudu.git;h=68ee03c ]

KUDU-2612 p9: anchor participant ops in WAL

Participant ops will now anchor WAL segments in the same way that we
anchor WAL segments for other in-memory state (e.g. MRS, DMS) that gets
rebuilt upon recovery.

Each participant op for a given transaction will update the single
anchor associated with that transaction. As a transaction is
transitioned from state to state, the transaction's prior participant op
is unanchored in favor of anchoring the new op.

Since there currently isn't a need to rid a participant of in-memory
state associated with a transaction, this adds a test-only method to
remove a committed or aborted transaction -- once this method called, a
transaction's anchor is removed and WAL GC may proceed to remove the
latest participant op.

Change-Id: I936f0a345c4b6095f0d99b6dd244e3092ae3f9d7
Reviewed-on: http://gerrit.cloudera.org:8080/16358
Reviewed-by: Alexey Serbin <as...@cloudera.com>
Tested-by: Andrew Wong <aw...@cloudera.com>


> Implement multi-row transactions
> --------------------------------
>
>                 Key: KUDU-2612
>                 URL: https://issues.apache.org/jira/browse/KUDU-2612
>             Project: Kudu
>          Issue Type: Task
>            Reporter: Mike Percy
>            Priority: Major
>              Labels: roadmap-candidate
>
> Tracking Jira to implement multi-row / multi-table transactions in Kudu.



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