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Posted to common-issues@hadoop.apache.org by "Mingliang Liu (JIRA)" <ji...@apache.org> on 2016/05/19 20:06:13 UTC
[jira] [Updated] (HADOOP-13032) Refactor FileSystem$Statistics to
use StorageStatistics
[ https://issues.apache.org/jira/browse/HADOOP-13032?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mingliang Liu updated HADOOP-13032:
-----------------------------------
Target Version/s: (was: )
Labels: backward-incompatible (was: )
Priority: Major (was: Minor)
Description:
[HADOOP-13065] added a new interface for retrieving FS and FC Statistics. This jira is to track the effort of moving the {{Statistics}} class out of {{FileSystem}}, and make it use that new interface.
We should keep the thread local implementation. Benefits are:
# they could be used in both {{FileContext}} and {{FileSystem}}
# shorter source code ({{FileSystem.java}} is gonna have 3780 LoC after [HDFS-10175]).
Please note this will be an backwards-incompatible change.
was:
This jira is to track the effort of moving the {{Statistics}} class out of {{FileSystem}} for:
# shorter source code ({{FileSystem.java}} is gonna have 3780 LoC after [HDFS-10175])
# simpler class structure (the {{Statistics}} is not very straightforward as it's optimized for performance in [HDFS-5276] and evloving rapidly recently, see [HDFS-9579], [HDFS-10175] and [MAPREDUCE-6660]).
Summary: Refactor FileSystem$Statistics to use StorageStatistics (was: Refactor FileSystem$Statistics as a separate source file)
> Refactor FileSystem$Statistics to use StorageStatistics
> -------------------------------------------------------
>
> Key: HADOOP-13032
> URL: https://issues.apache.org/jira/browse/HADOOP-13032
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Reporter: Mingliang Liu
> Assignee: Mingliang Liu
> Labels: backward-incompatible
>
> [HADOOP-13065] added a new interface for retrieving FS and FC Statistics. This jira is to track the effort of moving the {{Statistics}} class out of {{FileSystem}}, and make it use that new interface.
> We should keep the thread local implementation. Benefits are:
> # they could be used in both {{FileContext}} and {{FileSystem}}
> # shorter source code ({{FileSystem.java}} is gonna have 3780 LoC after [HDFS-10175]).
> Please note this will be an backwards-incompatible change.
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