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From "Yu Li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16291) Explain the correct semantic of hbase.client.retries.number in doc
Date Thu, 28 Jul 2016 07:37:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15397183#comment-15397183
] 

Yu Li commented on HBASE-16291:
-------------------------------

Thanks for the write up [~yangzhe1991].

One thing to emphasize here is that in 0.9x/1.x the semantic diverges in different functions
(Please refer to HBASE-14521 for more details), so I'm afraid it's not precise to say in 0.9x/1.x
it means "the number of TRIES".

Reason of HBASE-14521 not committed into master branch (quote of [~nkeywal]'s comments there):
bq. Committed to master. I didn't commit to 1.x branch because it's a behavior change...

> Explain the correct semantic of hbase.client.retries.number in doc
> ------------------------------------------------------------------
>
>                 Key: HBASE-16291
>                 URL: https://issues.apache.org/jira/browse/HBASE-16291
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0.0, 1.1.5, 1.2.2, 0.98.20
>            Reporter: Phil Yang
>            Assignee: Phil Yang
>         Attachments: HBASE-16291-v1.patch
>
>
> In hbase-default.xml (and also in HBase Book), the description of hbase.client.retries.number
is:
> {quote}
> Maximum retries.  Used as maximum for all retryable operations such as the getting of
a cell's value, starting a row update, etc.  Retry interval is a rough function based on hbase.client.pause.
 At first we retry at this interval but then with backoff, we pretty quickly reach  retrying
every ten seconds.  See HConstants#RETRY_BACKOFF for how the backup ramps up.  Change this
setting and hbase.client.pause to suit your workload.
> {quote}
> However, the semantic of this conf is confusing and different in various branches. After
HBASE-14521, in master it means "the number of RETRIES", but in all the other branches it
still means "the number of TRIES".
> So I think we need make the doc clear and tell users what it is in 0.98/1.x and what
it will be from 2.0



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