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From "Sergey Soldatov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-4224) Automatic resending cache for HashJoin doesn't work when cache has expired on server side
Date Tue, 26 Sep 2017 00:10:00 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-4224?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16179984#comment-16179984
] 

Sergey Soldatov commented on PHOENIX-4224:
------------------------------------------

[~jamestaylor] I think we can fix it. Working on the fix where we keep tracking when the cache
has been sent to the servers, so we will be able to separate the cases when it was expired
from the cases when it was never sent ( due the region movement across the region servers).
 

> Automatic resending cache for HashJoin doesn't work when cache has expired on server
side 
> ------------------------------------------------------------------------------------------
>
>                 Key: PHOENIX-4224
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4224
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 4.12.0
>            Reporter: Sergey Soldatov
>            Assignee: Sergey Soldatov
>            Priority: Blocker
>             Fix For: 4.12.0
>
>
> The problem occurs when the cache has expired on server side and client want to resend
it. This problem has been introduced in PHOENIX-4010. Actual result in this case is that client
doesn't send the cache because of the following check:
> {noformat}
> 			if (cache.addServer(tableRegionLocation) ... )) {
> 				success = addServerCache(table, startkeyOfRegion, pTable, cacheId, cache.getCachePtr(),
cacheFactory, txState);
> 			}
> {noformat}
> Since the region location hasn't been changed, we actually don't send cache again, but
produce new scanner which will fail with the same error and client will fall to recursion.




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