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From "Shalin Shekhar Mangar (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SOLR-4108) SolrCloud: Unexpected behavior when doing atomic updates or document reindexations.
Date Tue, 02 Sep 2014 07:02:20 GMT

     [ https://issues.apache.org/jira/browse/SOLR-4108?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Shalin Shekhar Mangar resolved SOLR-4108.
-----------------------------------------
       Resolution: Cannot Reproduce
    Fix Version/s:     (was: 4.9)
                       (was: 5.0)

I haven't seen these problems happen in a long time. This was reported on Solr 4.0 and we've
had tons of fixes since. The related issue SOLR-4080 has also been fixed.

Please re-open this issue if you encounter this issue on a more recent version of Solr.

> SolrCloud: Unexpected behavior when doing atomic updates or document reindexations.
> -----------------------------------------------------------------------------------
>
>                 Key: SOLR-4108
>                 URL: https://issues.apache.org/jira/browse/SOLR-4108
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrCloud
>    Affects Versions: 4.0
>         Environment: Note: This issue is related with JIRA-4080.
> Context: SolrCloud deployed with nShards=1, two Solr servers, each one with two cores/collections.
We have then one leader and one replica for each shard.
>            Reporter: Luis Cappa Banda
>
> The situation is this the following:
> 1. SolrCloud with one shard and two Solr instances.
> 2. Indexation via SolrJ with CloudServer and a custom BinaryLBHttpSolrServer that uses
BinaryRequestWriter to execute correctly atomic updates. Check JIRA-4080.
> 3. An asynchronous proccess updates partially some document fields. After that operation
I automatically execute a commit, so the index must be reloaded.
> What I have checked is that both using atomic updates or complete document reindexations
random documents are not updated even if I saw debugging how the add() and commit() operations
were executed correctly and without errors. In other words, something strange happens when
you both index and update documents asynchronously at the same time.
> Also, if I debug line  by line (blocking other indexation/update proccesses) and I check
with my own eyes when an index operation is done, I confirm that the document itself updates
correctly.
> What I think is that there is some critical problem with both SolrCloud and CloudSolrServer
interface that has something to do with index blocking while writing and forwarding document
updates to replicas.
> If I´m right, and considering also JIRA-4080, I would not recommend SolrCloud in production
at the moment.



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