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Posted to dev@lucene.apache.org by "Nagendra Nagarajayya (JIRA)" <ji...@apache.org> on 2013/02/18 00:53:12 UTC
[jira] [Comment Edited] (SOLR-3816) Need a more granular nrt system
that is close to a realtime system.
[ https://issues.apache.org/jira/browse/SOLR-3816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13580328#comment-13580328 ]
Nagendra Nagarajayya edited comment on SOLR-3816 at 2/17/13 11:52 PM:
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@Yonik:
Please find a new patch. This patch removes the code that you had highlighted and introduces a request granularity based realtime-search. The mechanism guarantees that the underlying nrt reader does not change for a request. So all components of a request like search, faceting, highlight, etc. see the same view of the index. Each request though may return a new set of results.
I have also implemented a intra-request granularity wherein each component like search, faceting, highlight, etc. may return different results. This is not included in the patch.
was (Author: nnagarajayya):
@Yonik:
Please find a new patch. This patch removes the code that you had highlighted and introduces a request granularity based realtime-search. The mechanism guarantees that the underlying nrt reader does not change for a request. So all components of a request like search, faceting, highlight, etc. see the same view of the index. Each request though may return a different set of results.
I have also implemented a intra-request granularity wherein each component like search, faceting, highlight, etc. may return different results. This is not included in the patch.
> Need a more granular nrt system that is close to a realtime system.
> -------------------------------------------------------------------
>
> Key: SOLR-3816
> URL: https://issues.apache.org/jira/browse/SOLR-3816
> Project: Solr
> Issue Type: Improvement
> Components: clients - java, replication (java), search, SearchComponents - other, SolrCloud, update
> Affects Versions: 4.0
> Reporter: Nagendra Nagarajayya
> Labels: nrt, realtime, replication, search, solrcloud, update
> Attachments: alltests_passed_with_realtime_turnedoff.log, SOLR-3816_4.0_branch.patch, SOLR-3816-4.x.trunk.patch, solr-3816-realtime_nrt.patch, SOLR-3816-trunk_request_granularity.patch
>
>
> Need a more granular NRT system that is close to a realtime system. A realtime system should be able to reflect changes to the index as and when docs are added/updated to the index. soft-commit offers NRT and is more realtime friendly than hard commit but is limited by the dependency on the SolrIndexSearcher being closed and reopened and offers a coarse granular NRT. Closing and reopening of the SolrIndexSearcher may impact performance also.
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