hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Heng Chen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14703) not collect stats when call HTable.mutateRow
Date Mon, 23 Nov 2015 23:59:11 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15023407#comment-15023407
] 

Heng Chen commented on HBASE-14703:
-----------------------------------

{quote}
What do you mean? Its an optional field, so if its not there on the wire, PB will just ignore
it (which is why PB generates #hasLoadStats() method).
{quote}
In PB, if we remove an field entirely,  future users maybe reuse this tag number, which will
cause some problems.

{quote}
ClientProtos.MultiResponse (the PB) or MultiResponse (o.a.h.hbase.client class)?
{quote}
MultiResponse (o.a.h.hbase.client class).    

{quote}
 I think by marking it as an EMPTY_RESULT we are implicitly saying 'processed'. The only other
option for that value is as an exception, right?
{quote}
yeah,  when i pass results[] in AP.submit,  if exception happens, it will failed.   That's
why TestCheckAndMutate failed i mentioned above.



> not collect stats when call HTable.mutateRow 
> ---------------------------------------------
>
>                 Key: HBASE-14703
>                 URL: https://issues.apache.org/jira/browse/HBASE-14703
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Heng Chen
>            Assignee: Heng Chen
>             Fix For: 2.0.0
>
>         Attachments: HBASE-14702_v5.2_addendum-addendum.patch, HBASE-14703-5.2-addendum.patch,
HBASE-14703-async.patch, HBASE-14703-start.patch, HBASE-14703-v4.1.patch, HBASE-14703-v4.patch,
HBASE-14703.patch, HBASE-14703_v1.patch, HBASE-14703_v2.patch, HBASE-14703_v3.patch, HBASE-14703_v5.1.patch,
HBASE-14703_v5.2.patch, HBASE-14703_v5.patch, HBASE-14703_v6.patch
>
>
> In {{AsyncProcess.SingleServerRequestRunnable}}, it seems we update serverStatistics
twice.
> The first one is that we wrapper {{RetryingCallable}}  by {{StatsTrackingRpcRetryingCaller}},
and do serverStatistics update when we call {{callWithRetries}} and {{callWithoutRetries}}.
Relates code like below:
> {code}
>   @Override
>   public T callWithRetries(RetryingCallable<T> callable, int callTimeout)
>       throws IOException, RuntimeException {
>     T result = delegate.callWithRetries(callable, callTimeout);
>     return updateStatsAndUnwrap(result, callable);
>   }
>   @Override
>   public T callWithoutRetries(RetryingCallable<T> callable, int callTimeout)
>       throws IOException, RuntimeException {
>     T result = delegate.callWithRetries(callable, callTimeout);
>     return updateStatsAndUnwrap(result, callable);
>   }
> {code}
> The secondary one is after we get response, in {{receiveMultiAction}}, we do update again.

> {code}
> // update the stats about the region, if its a user table. We don't want to slow down
> // updates to meta tables, especially from internal updates (master, etc).
> if (AsyncProcess.this.connection.getStatisticsTracker() != null) {
>   result = ResultStatsUtil.updateStats(result,
>   AsyncProcess.this.connection.getStatisticsTracker(), server, regionName);
> }
> {code}
> It seems that {{StatsTrackingRpcRetryingCaller}} is NOT necessary,  remove it?



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

Mime
View raw message