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From "Yiqun Lin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11566) Ozone: Document missing metrics for container operations
Date Fri, 31 Mar 2017 11:46:41 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11566?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yiqun Lin updated HDFS-11566:
-----------------------------
    Attachment: HDFS-11566-HDFS-7240.005.patch

Cancel my +1. I looked into this. I find some places is not accurate. Based on v004 patch,
I update three places.

1. {{Since}} --> {{since}}
{code}
+While it is possible to read the bytes in update container, it really makes
+no sense, Since no data stream involved. Users are advised to use this
{code}
2.{{LatencyCreateContainerNumOps}} should be {{LatencyCreateContainerAvgTime}}
{code}
+*Average Latency of each operation* - The average latency of the operation.
+Eg. `LatencyCreateContainerNumOps` - This tells us the average latency of
+Create Container.
{code}
3.The number 50 contained in {{CreateContainerNanos50}} is not mean the percentile.here.
{code}
+*Quantiles for each of these operations* - The  50/75/90/95/99th percentile
+of these operations. Eg. `CreateContainerNanos50` -- gives latency of the
+create container operations at the 50th percentile latency.
{code}
I have rephrased this to the following:
{code}
Eg. `CreateContainerNanos60s50thPercentileLatency` --
gives latency of the create container operations at the 50th percentile latency
(1 minute granularity).
{code}
Attach my updated patch. Hi [~anu], if you think the latest patch can also look good to you.
I think we can commit this, :).

> Ozone: Document missing metrics for container operations
> --------------------------------------------------------
>
>                 Key: HDFS-11566
>                 URL: https://issues.apache.org/jira/browse/HDFS-11566
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: documentation, ozone
>            Reporter: Yiqun Lin
>            Assignee: Yiqun Lin
>            Priority: Minor
>         Attachments: HDFS-11566-HDFS-7240.001.patch, HDFS-11566-HDFS-7240.002.patch,
HDFS-11566-HDFS-7240.003.patch, HDFS-11566-HDFS-7240.004.patch, HDFS-11566-HDFS-7240.005.patch
>
>
> In HDFS-11463, it adds some metrics for container operations and can be exported over
JMX. But it hasn't been documented in {{Metrics.md}}. There are many metrics added for container.
Document these will be helpful for users.



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