You are viewing a plain text version of this content. The canonical link for it is here.
Posted to common-issues@hadoop.apache.org by "Aaron Fabbri (JIRA)" <ji...@apache.org> on 2016/08/24 01:55:21 UTC
[jira] [Commented] (HADOOP-13065) Add a new interface for
retrieving FS and FC Statistics
[ https://issues.apache.org/jira/browse/HADOOP-13065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15434055#comment-15434055 ]
Aaron Fabbri commented on HADOOP-13065:
---------------------------------------
Ooops.. Not sure how I accidentally clicked Assign To Me.. thanks for fixing that [~hitesh]
> Add a new interface for retrieving FS and FC Statistics
> -------------------------------------------------------
>
> Key: HADOOP-13065
> URL: https://issues.apache.org/jira/browse/HADOOP-13065
> Project: Hadoop Common
> Issue Type: New Feature
> Components: fs
> Reporter: Ram Venkatesh
> Assignee: Mingliang Liu
> Fix For: 2.8.0
>
> Attachments: HADOOP-13065-007.patch, HADOOP-13065.008.patch, HADOOP-13065.009.patch, HADOOP-13065.010.patch, HADOOP-13065.011.patch, HADOOP-13065.012.patch, HADOOP-13065.013.patch, HDFS-10175.000.patch, HDFS-10175.001.patch, HDFS-10175.002.patch, HDFS-10175.003.patch, HDFS-10175.004.patch, HDFS-10175.005.patch, HDFS-10175.006.patch, TestStatisticsOverhead.java
>
>
> Currently FileSystem.Statistics exposes the following statistics:
> BytesRead
> BytesWritten
> ReadOps
> LargeReadOps
> WriteOps
> These are in-turn exposed as job counters by MapReduce and other frameworks. There is logic within DfsClient to map operations to these counters that can be confusing, for instance, mkdirs counts as a writeOp.
> Proposed enhancement:
> Add a statistic for each DfsClient operation including create, append, createSymlink, delete, exists, mkdirs, rename and expose them as new properties on the Statistics object. The operation-specific counters can be used for analyzing the load imposed by a particular job on HDFS.
> For example, we can use them to identify jobs that end up creating a large number of files.
> Once this information is available in the Statistics object, the app frameworks like MapReduce can expose them as additional counters to be aggregated and recorded as part of job summary.
--
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