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Posted to hdfs-issues@hadoop.apache.org by "BELUGA BEHR (JIRA)" <ji...@apache.org> on 2018/10/08 16:06:00 UTC
[jira] [Updated] (HDFS-13970) CacheManager Directives Map
[ https://issues.apache.org/jira/browse/HDFS-13970?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
BELUGA BEHR updated HDFS-13970:
-------------------------------
Attachment: HDFS-13970.1.patch
> CacheManager Directives Map
> ---------------------------
>
> Key: HDFS-13970
> URL: https://issues.apache.org/jira/browse/HDFS-13970
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: caching, hdfs
> Affects Versions: 3.2.0
> Reporter: BELUGA BEHR
> Assignee: BELUGA BEHR
> Priority: Minor
> Attachments: HDFS-13970.1.patch
>
>
> # Use Guava Multimap to simplify code
> ## Currently, code uses a mix of LinkedList and ArrayList - just pick one
> ## Currently, {{directivesByPath}} structure is sorted but never used in a sorted way, it only performs remove and add operations, no iteration - use a {{Set}} instead of a {{List}}
> # The {{CacheDirective}} class needs a better hashcode implementation since it will be used in a Set. Do not instantiate a {{HashBuilder}} object every time {{hashcode}} is called. Ouch.
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