[infinispan-issues] [JBoss JIRA] (ISPN-3767) MassIndexer breaks search feature with one node cluster

[Romain Pelisse (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-3767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12928599#comment-12928599 ] 

Romain Pelisse commented on ISPN-3767:
--------------------------------------

Hi Adrian,

I think I created a bit too many test cases, as end up numeroting them :) 

Cool to hear that the fix are on the way (no idea what you meant by PR, but sounds good anyway :p). At this point, I just need one thing from you, that you double check the project I published on github and called [ISPN-3767|https://github.com/rpelisse/ISPN-3767], and confirm to me if such set up *can work* with ISPN 5.2.6 or not.

As you mentioned above, adding more than 2 nodes to the grid allowed the Mass Indexer to works properly, and the query to work also (ie not "index corruption" or "invalid state"). I've built this project in order to test that, and I still run into the same issue (import is quick, mass indexing runs smoothly also, but any query fails afterwards, returning always zero).

If there is no chance to have that working in ISPN 5.2.6 - which I find weird, because the unit test seems to work, I'll switch to 6.0.0. Otherwise, I'll be happy to find out what is wrong in my setup.




                
> MassIndexer breaks search feature with one node cluster
> -------------------------------------------------------
>
>                 Key: ISPN-3767
>                 URL: https://issues.jboss.org/browse/ISPN-3767
>             Project: Infinispan
>          Issue Type: Bug
>    Affects Versions: 5.2.4.Final
>            Reporter: Romain Pelisse
>            Assignee: Adrian Nistor
>             Fix For: 6.1.0.Final
>
>
> Hi,
> Trying to cope with the extreme slowliness of put() operation with indexing [1], I've tried to use the MassIndexer, to create the index AFTER adding all the data in the grid. This actually works pretty well, but, when running in a "single node" grid, it "breaks" the search, which always returns 0 result to any kind of query.
> I've modified one of the test suite of InfiniSpan to reproduce the issue:
> https://github.com/rpelisse/infinispan/tree/mass-indexer-breaks-search-with-mono-instance 
> Once this branch is checked out, just run :
> $ cd ./query
> $  mvn clean -Dtest=org.infinispan.query.distributed.DistributedMassIndexingTest test
> Note: MassIndexer being implemented using the Map/Reduce algorithm, it requires to run within a cluster (ie several instances of ISPN).
> [1] http://stackoverflow.com/questions/10090361/infinispan-very-slow-for-loading-data-with-indexing-can-it-be-made-faster
> If run within a single node cluster, the MassIndexer

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