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https://issues.apache.org/jira/browse/HBASE-4199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13087475#comment-13087475
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stack commented on HBASE-4199:
------------------------------
On 1., BlockCacheColumnFamilySummary? CF needs the table to qualify it but
scope is column family?
On 2., Normally that is so but looking in the Interfaces, e.g.
HRegionInterface.java, I see that some methods take Lists.
This is the class that does the serialization:
src/main/java/org/apache/hadoop/hbase/io/HbaseObjectWritable.java
It seems to do some special stuff to do a List.
Presumes List of Writables.
On 3., Yeah. That was obvious (smile).
On 4., Yes. You thing it will be invoked frequently?
On 5., Hmm... yeah, or just check for null when serializing.
Good stuff.
> blockCache summary - backend
> ----------------------------
>
> Key: HBASE-4199
> URL: https://issues.apache.org/jira/browse/HBASE-4199
> Project: HBase
> Issue Type: Sub-task
> Reporter: Doug Meil
> Assignee: Doug Meil
> Priority: Minor
> Attachments: java_HBASE_4199.patch, java_HBASE_4199_v2.patch,
> java_HBASE_4199_v3.patch
>
>
> This is the backend work for the blockCache summary. Change to BlockCache
> interface, Summarization in LruBlockCache, BlockCacheSummaryEntry, addition
> to HRegionInterface, and HRegionServer.
> This will NOT include any of the web UI or anything else like that. That is
> for another sub-task.
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