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Date: Thu, 4 Aug 2016 08:15:20 +0000 (UTC)
From: "Varun Thacker (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
Message-ID: <JIRA.12966037.1462794153000.221538.1470298520736@Atlassian.JIRA>
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References: <JIRA.12966037.1462794153000@Atlassian.JIRA> <JIRA.12966037.1462794153063@arcas>
Subject: [jira] [Commented] (SOLR-9090) solrj CloudSolrClient: add
 directUpdatesToLeadersOnly support
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archived-at: Thu, 04 Aug 2016 08:15:22 -0000


    [ 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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