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https://issues.apache.org/jira/browse/ACCUMULO-2613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13957846#comment-13957846
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Eric Newton commented on ACCUMULO-2613:
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To pin WALs to the metadata table, we would first have to separate the WAL for
the metadata tablets (table-specific WALs).
> Take advantage of HDFS caching
> ------------------------------
>
> Key: ACCUMULO-2613
> URL: https://issues.apache.org/jira/browse/ACCUMULO-2613
> Project: Accumulo
> Issue Type: Improvement
> Reporter: Sean Busbey
> Priority: Critical
> Fix For: 1.7.0
>
>
> Hadoop 2.3.0 added [HDFS
> caching|http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/CentralizedCacheManagement.html].
> We should use this for small internal use tables (like !METADATA) and we
> should probably have a configurable option to use it for tables, with a stern
> warning that it should only be enabled on small tables that will be
> frequently used.
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