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From "Phil Yang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-18390) Sleep too long when finding region location failed
Date Mon, 17 Jul 2017 04:08:00 GMT

     [ https://issues.apache.org/jira/browse/HBASE-18390?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Phil Yang updated HBASE-18390:
------------------------------
    Description: If RegionServerCallable#prepare failed when getRegionLocation, the location
in this callable object is null. And before we retry we will sleep. However, when location
is null we will sleep at least 10 seconds. And the request will be failed directly if operation
timeout is less than 10 seconds. I think it is no need to keep MIN_WAIT_DEAD_SERVER logic.
Use backoff sleeping logic is ok for most cases.  (was: If RegionServerCallable#prepare failed
when getRegionLocation, the location in this callable object is null. And before we retry
we will sleep. However, when location is null we will sleep at least 10 seconds. I think it
is no need to keep MIN_WAIT_DEAD_SERVER logic. Use backoff sleeping logic is ok for most cases.)

> Sleep too long when finding region location failed
> --------------------------------------------------
>
>                 Key: HBASE-18390
>                 URL: https://issues.apache.org/jira/browse/HBASE-18390
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 1.4.0, 1.3.1, 1.2.6, 1.1.11, 2.0.0-alpha-1
>            Reporter: Phil Yang
>            Assignee: Phil Yang
>         Attachments: HBASE-18390.v01.patch
>
>
> If RegionServerCallable#prepare failed when getRegionLocation, the location in this callable
object is null. And before we retry we will sleep. However, when location is null we will
sleep at least 10 seconds. And the request will be failed directly if operation timeout is
less than 10 seconds. I think it is no need to keep MIN_WAIT_DEAD_SERVER logic. Use backoff
sleeping logic is ok for most cases.



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