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Posted to dev@lucene.apache.org by "Varun Thacker (JIRA)" <ji...@apache.org> on 2016/08/04 08:15:20 UTC
[jira] [Commented] (SOLR-9090) solrj CloudSolrClient: add
directUpdatesToLeadersOnly support
[ https://issues.apache.org/jira/browse/SOLR-9090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15407382#comment-15407382 ]
Varun Thacker commented on SOLR-9090:
-------------------------------------
Hi Christine,
Just curious - Why shouldn't directUpdatesToLeadersOnly be the default behaviour?
If at a time of an update there are no leaders then won't the request fail anyways?
> solrj CloudSolrClient: add directUpdatesToLeadersOnly support
> -------------------------------------------------------------
>
> Key: SOLR-9090
> URL: https://issues.apache.org/jira/browse/SOLR-9090
> Project: Solr
> Issue Type: New Feature
> Components: SolrJ
> Reporter: Christine Poerschke
> Assignee: Christine Poerschke
> Priority: Minor
> Fix For: 6.2, master (7.0)
>
> Attachments: SOLR-9090.patch, SOLR-9090.patch
>
>
> solrj CloudSolrClient: add directUpdatesToLeadersOnly support
> (Marvin Justice, Christine Poerschke)
> Proposed change:
> * Addition of a {{directUpdatesToLeadersOnly}} flag to allow clients to request that direct updates be sent to the shard leaders and only to the shard leaders.
> Motivation:
> * In a scenario where there is temporarily no shard leader the update request will 'fail fast' allowing the client to handle retry logic.
> Related tickets:
> * SOLR-6312 concerns the ((currently) no longer used) {{updatesToLeaders}} flag. The updatesToLeaders logic however appears to be slightly different from the proposed directUpdatesToLeadersOnly logic: {{updatesToLeaders}} indicates that sending to leaders is preferred but not mandatory whereas {{directUpdatesToLeadersOnly}} mandates sending to leaders only.
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