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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-823) Concurrent "open mapfile reader" limit
Date Fri, 19 Dec 2008 02:37:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-823?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12657985#action_12657985
] 

stack commented on HBASE-823:
-----------------------------

Need new file format to be able to do stuff like limit indices or to store them in soft references.

> Concurrent "open mapfile reader" limit
> --------------------------------------
>
>                 Key: HBASE-823
>                 URL: https://issues.apache.org/jira/browse/HBASE-823
>             Project: Hadoop HBase
>          Issue Type: Improvement
>            Reporter: stack
>
> Over in HBASE-745, Luo Ning profiling found that the number of open Readers has direct
impact on memory used.  This issue is about putting an upper bound on the number of open Readers
doing something like a bounded pool w/ a LRU eviction policy.

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