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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13453) S3Guard: Instrument new functionality with Hadoop metrics.
Date Wed, 03 May 2017 19:54:04 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13453?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steve Loughran updated HADOOP-13453:
------------------------------------
       Resolution: Fixed
    Fix Version/s: HADOOP-13345
           Status: Resolved  (was: Patch Available)

OK, it's in: that's for this

now we have to think about what extra things to measure....

> 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
>             Fix For: HADOOP-13345
>
>         Attachments: HADOOP-13453-HADOOP-13345-001.patch, HADOOP-13453-HADOOP-13345-002.patch,
HADOOP-13453-HADOOP-13345-003.patch, HADOOP-13453-HADOOP-13345-004.patch, HADOOP-13453-HADOOP-13345-005.patch
>
>
> 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.



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