hadoop-yarn-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Sangjin Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4053) Change the way metric values are stored in HBase Storage
Date Fri, 28 Aug 2015 01:15:46 GMT

    [ https://issues.apache.org/jira/browse/YARN-4053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14717865#comment-14717865
] 

Sangjin Lee commented on YARN-4053:
-----------------------------------

[~vrushalic], [~jrottinghuis], and I discussed supported types a little more, and we're of
the opinion that we can *start* supporting only longs for now (i.e. no floating point types),
while we can consider adding a floating point type (namely double) to the list of supported
types. So for now, how about assuming (and enforcing) long as the type of the metric values,
and pursue how we can add double later if we need it? Thoughts?

> Change the way metric values are stored in HBase Storage
> --------------------------------------------------------
>
>                 Key: YARN-4053
>                 URL: https://issues.apache.org/jira/browse/YARN-4053
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>    Affects Versions: YARN-2928
>            Reporter: Varun Saxena
>            Assignee: Varun Saxena
>         Attachments: YARN-4053-YARN-2928.01.patch
>
>
> Currently HBase implementation uses GenericObjectMapper to convert and store values in
backend HBase storage. This converts everything into a string representation(ASCII/UTF-8 encoded
byte array).
> While this is fine in most cases, it does not quite serve our use case for metrics. 
> So we need to decide how are we going to encode and decode metric values and store them
in HBase.
>  



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message