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Posted to dev@lucene.apache.org by "Markus Jelsma (JIRA)" <ji...@apache.org> on 2016/03/30 13:26:25 UTC
[jira] [Comment Edited] (SOLR-8856) Do not cache merge or 'read
once' contexts in the hdfs block cache.
[ https://issues.apache.org/jira/browse/SOLR-8856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15217815#comment-15217815 ]
Markus Jelsma edited comment on SOLR-8856 at 3/30/16 11:25 AM:
---------------------------------------------------------------
Hey - is this resolved? This is still open and it mentioned twice in 6.1.0's changes.txt
{quote}
73 Optimizations
74 ----------------------
75 * SOLR-8722: Don't force a full ZkStateReader refresh on every Overseer operation.
76 (Scott Blum via shalin)
77
78 * SOLR-8856: Do not cache merge or 'read once' contexts in the hdfs block cache. (Mark Miller)
79
80 * SOLR-8745: Deprecate costly ZkStateReader.updateClusterState(), replace with a narrow
81 forceUpdateCollection(collection) (Scott Blum via shalin)
82
83 * SOLR-8856: Do not cache merge or 'read once' contexts in the hdfs block cache. (Mark Miller, Mike Drob)
{quote}
Also, it has no fixversion set.
was (Author: markus17):
Hey - is this resolved? This is still open and it mentioned twice in 6.1.0's changes.txt
{quote}
73 Optimizations
74 ----------------------
75 * SOLR-8722: Don't force a full ZkStateReader refresh on every Overseer operation.
76 (Scott Blum via shalin)
77
78 * SOLR-8856: Do not cache merge or 'read once' contexts in the hdfs block cache. (Mark Miller)
79
80 * SOLR-8745: Deprecate costly ZkStateReader.updateClusterState(), replace with a narrow
81 forceUpdateCollection(collection) (Scott Blum via shalin)
82
83 * SOLR-8856: Do not cache merge or 'read once' contexts in the hdfs block cache. (Mark Miller, Mike Drob)
{quote}
> Do not cache merge or 'read once' contexts in the hdfs block cache.
> -------------------------------------------------------------------
>
> Key: SOLR-8856
> URL: https://issues.apache.org/jira/browse/SOLR-8856
> Project: Solr
> Issue Type: Improvement
> Reporter: Mark Miller
> Assignee: Mark Miller
> Attachments: SOLR-8856.patch, SOLR-8856.patch, SOLR-8856.patch
>
>
> Generally the block cache will not be large enough to contain the whole index and merges can thrash the cache for queries. Even if we still look in the cache, we should not populate it.
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