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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6496) Example ZK based scan policy
Date Tue, 07 Aug 2012 20:50:11 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13430616#comment-13430616
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Lars Hofhansl commented on HBASE-6496:
--------------------------------------

Thanks Ted,

Yep, will add the license header. This was just to get a general feeling for whether the logic
is even correct... Dealing with ZK correctly is tricky.

bq. Should shared data provide putIfAbsent() functionality ?
Not sure what you mean. It does (the interface it exposes is a ConcurrentMap as per HBASE-6505).
Do you think it should not?

Will add Thread.interrupt (I keep forgetting about that :( ).
                
> Example ZK based scan policy
> ----------------------------
>
>                 Key: HBASE-6496
>                 URL: https://issues.apache.org/jira/browse/HBASE-6496
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>             Fix For: 0.96.0, 0.94.2
>
>         Attachments: 6496-v2.txt, 6496.txt
>
>
> Provide an example of a RegionServer that listens to a ZK node to learn about what set
of KVs can safely be deleted during a compaction.

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