hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Thejas M Nair (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-10562) Add versioning/format mechanism to NOTIFICATION_LOG entries, expand MESSAGE size
Date Thu, 16 Feb 2017 04:51:41 GMT

    [ https://issues.apache.org/jira/browse/HIVE-10562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15869171#comment-15869171
] 

Thejas M Nair commented on HIVE-10562:
--------------------------------------

[~spena]
For some reason the tests for metastore schema upgrade in HIVE-9800 didn't get kicked off
in this case. Any idea why ?


> Add versioning/format mechanism to NOTIFICATION_LOG entries, expand MESSAGE size
> --------------------------------------------------------------------------------
>
>                 Key: HIVE-10562
>                 URL: https://issues.apache.org/jira/browse/HIVE-10562
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Import/Export
>    Affects Versions: 1.2.0
>            Reporter: Sushanth Sowmyan
>            Assignee: Sushanth Sowmyan
>             Fix For: 2.2.0
>
>         Attachments: HIVE-10562.2.patch, HIVE-10562.3.patch, HIVE-10562.4.patch, HIVE-10562.5.patch,
HIVE-10562.patch
>
>
> Currently, we have a JSON encoded message being stored in the NOTIFICATION_LOG table.
> If we want to be future proof, we need to allow for versioning of this message, since
we might change what gets stored in the message. A prime example of what we'd want to change
is as in HIVE-10393.
> MessageFactory already has stubs to allow for versioning of messages, and we could expand
on this further in the future. NotificationListener currently encodes the message version
into the header for the JMS message it sends, which seems to be the right place for a message
version (instead of being contained in the message, for eg.).
> So, we should have a similar ability for DbEventListener as well, and the place this
makes the most sense is to and add a version column to the NOTIFICATION_LOG table.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

Mime
View raw message