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From "Pieter (JIRA)" <>
Subject [jira] [Commented] (SOLR-6162) Softcommit does not open a new searcher after adding docs
Date Sat, 14 Jun 2014 08:45:02 GMT


Pieter commented on SOLR-6162:

That nrtMode parameter does the trick. Elaboration on how it got there is quite short; when
upgrading to 4.8 I diffed my solrconfig with the new one from the examples and noticed this
parameter. I interpreted the comment quoted above as a hint to set it to true, since we run
in master/slave setup. That means, for most cores we have a master/slave setup. For a few
we query directly on the master and on those we had the issue. 

I can't add anything to the discussion about removing the param. If it can be removed cause
it doesn't add anything (but confusion), I would vote for it. Regardless that param, I do
think that if a user makes the effort to do a softcommit (or configure autosoftcommit), he'll
do so because he wants the update to be visible after the commit. Having an extra configuration
switch to confirm such behaviour is not intuitive I think.

> Softcommit does not open a new searcher after adding docs
> ---------------------------------------------------------
>                 Key: SOLR-6162
>                 URL:
>             Project: Solr
>          Issue Type: Bug
>    Affects Versions: 4.8
>            Reporter: Pieter
>         Attachments:
> We just upgraded from 4.2 to 4.8.1 and now run into an issue where added documents are
not visible after doing a soft commit. Seems to be introduced by SOLR-5783. The setup of the
index is fairly simple; single core, no cloud, no replication, java program that adds a few
rows, concludes with a softcommit, hardcommit is done via autoCommit few times an hour. Another
(similar) index that uses autoSoftCommit instead of softcommitting via code has the same issue.
Here is a snippet of the log:
> {code}
> 07:34:01.867 INFO  [qtp1520582600-1445       ] : o.a.s.u.processor.LogUpdateProcessor
    - [PRD_KlwrDocAttrs] webapp=/solr path=/update params={wt=javabin&version=2} {add=[id-04114dd2-339e-4d2f-bb9f-539415799b1a
(1470681570716155904), id-05eac67d-4f84-4c6f-b78f-714fe31eab40 (1470681570716155905), id-07559ff2-246c-4fde-9b97-0c5926348f62
(1470681570716155906), id-07cc0feb-b92d-41b8-9755-7677c9589af8 (1470681570716155907), id-11214665-9640-459d-804b-d9e3b069e8c2
(1470681570716155908), id-1147abeb-3dd5-4cda-b469-a99ebce913b4 (1470681570716155909), id-143f50b4-c195-480e-ab44-0ee4e7fbdc5c
(1470681570716155910), id-14ad5b3e-1558-4bc6-a7a7-d2f03d1cd040 (1470681570717204480), id-168e810c-9a75-4e4f-84f4-946866cf0d26
(1470681570717204481), id-16de425b-0cd8-4bcd-98c1-6699c3de5112 (1470681570717204482), ...
(87 adds)]} 0 264
> 07:34:01.869 INFO  [qtp1520582600-1445       ] : org.apache.solr.update.UpdateHandler
    - start commit{,optimize=false,openSearcher=true,waitSearcher=true,expungeDeletes=false,softCommit=true,prepareCommit=false}
> 07:34:01.872 INFO  [qtp1520582600-1445       ] : org.apache.solr.core.SolrCore      
     - SolrIndexSearcher has not changed - not re-opening:
> 07:34:01.872 INFO  [qtp1520582600-1445       ] : org.apache.solr.update.UpdateHandler
    - end_commit_flush
> 07:34:01.873 INFO  [qtp1520582600-1445       ] : o.a.s.u.processor.LogUpdateProcessor
    - [PRD_KlwrDocAttrs] webapp=/solr path=/update params={waitSearcher=true&commit=true&wt=javabin&version=2&softCommit=true}
{commit=} 0 4
> 0
> {code}

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