[
https://issues.apache.org/jira/browse/HDFS-5376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16599111#comment-16599111
]
Hrishikesh Gadre commented on HDFS-5376:
----------------------------------------
[~andrew.wang] are you planning to work on this? Since I am looking into
HDFS-13820, I would like to work on this as well as they are related.
> Incremental rescanning of cached blocks and cache entries
> ---------------------------------------------------------
>
> Key: HDFS-5376
> URL: https://issues.apache.org/jira/browse/HDFS-5376
> Project: Hadoop HDFS
> Issue Type: Wish
> Components: namenode
> Affects Versions: HDFS-4949
> Reporter: Andrew Wang
> Assignee: Andrew Wang
> Priority: Major
>
> {{CacheReplicationMonitor#rescan}} is invoked whenever a new cache entry is
> added or removed. This involves a complete rescan of all cache entries and
> cached blocks, which is potentially expensive. It'd be better to do an
> incremental scan instead. This would also let us incrementally re-scan on
> namespace changes like rename and create for better caching latency.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
