hadoop-common-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ai Deng (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13453) S3Guard: Instrument new functionality with Hadoop metrics.
Date Thu, 26 Jan 2017 11:05:24 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15839563#comment-15839563
] 

Ai Deng commented on HADOOP-13453:
----------------------------------

Steve, thank you for sharing these knowledge and thought. It's a good idea to having a inner
class for S3guard metrics.

I have started a little with all your help, but I will be on holiday for next two weeks (back
to China for the new year). I really hope I can resolve this ticket (could work more quick
on this after the holiday), but if the timing is not match to the plan of Hadoop13345, please
affect this ticket to someone else, so we can finish in time.

I will try to catch up with you in China. 

> S3Guard: Instrument new functionality with Hadoop metrics.
> ----------------------------------------------------------
>
>                 Key: HADOOP-13453
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13453
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>            Reporter: Chris Nauroth
>            Assignee: Ai Deng
>
> Provide Hadoop metrics showing operational details of the S3Guard implementation.
> The metrics will be implemented in this ticket:
> ● S3GuardRechecksNthPercentileLatency (MutableQuantiles) ­​ Percentile time spent
> in rechecks attempting to achieve consistency. Repeated for multiple percentile values
> of N.  This metric is an indicator of the additional latency cost of running
S3A with
> S3Guard.
> ● S3GuardRechecksNumOps (MutableQuantiles) ­​ Number of times a consistency
> recheck was required while attempting to achieve consistency.
> ● S3GuardStoreNthPercentileLatency (MutableQuantiles) ­​ Percentile time spent in
> operations against the consistent store, including both write operations during file
system
> mutations and read operations during file system consistency checks. Repeated for
> multiple percentile values of N. This metric is an indicator of latency to the
consistent
> store implementation.
> ● S3GuardConsistencyStoreNumOps (MutableQuantiles) ­​ Number of operations
> against the consistent store, including both write operations during file system mutations
> and read operations during file system consistency checks.
> ● S3GuardConsistencyStoreFailures (MutableCounterLong) ­​ Number of failures
> during operations against the consistent store implementation.
> ● S3GuardConsistencyStoreTimeouts (MutableCounterLong) ­​ Number of timeouts
> during operations against the consistent store implementation.
> ● S3GuardInconsistencies (MutableCounterLong) ­ C​ ount of times S3Guard failed
to
> achieve consistency, even after exhausting all rechecks. A high count may indicate
> unexpected out­of­band modification of the S3 bucket contents, such as by an external
> tool that does not make corresponding updates to the consistent store.



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

---------------------------------------------------------------------
To unsubscribe, e-mail: common-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: common-issues-help@hadoop.apache.org


Mime
View raw message