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https://issues.apache.org/jira/browse/SOLR-1867?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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James Dyer resolved SOLR-1867.
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Resolution: Won't Fix
SOLR-2382 allowed for plugable cache implementations (3.6 & 4.x). There are 2
(uncommitted thus far) cache implementations that store the cache on-disk (See
SOLR-2613 and SOLR-2948).
Finally, if the memory leak described was due to ThreadLocal usage, this was
eliminated in 4.0 with the removal of the "threads" feature.
> CachedSQLentity processor is using unbounded hashmap
> -----------------------------------------------------
>
> Key: SOLR-1867
> URL: https://issues.apache.org/jira/browse/SOLR-1867
> Project: Solr
> Issue Type: Bug
> Components: contrib - DataImportHandler
> Affects Versions: 1.4
> Reporter: barani
>
> I am using cachedSqlEntityprocessor in DIH to index the data. Please find a
> sample dataconfig structure,
> <entity x query="select * from x"> ---> object
> <entity y query="select * from y" processor="cachedSqlEntityprocessor"
> cachekey=y.id cachevalue=x.id> --> object properties
> For each and every object I would be retrieveing corresponding object
> properties (in my subqueries).
> I get in to OOM very often and I think thats a trade off if I use
> cachedSqlEntityprocessor.
> My assumption is that when I use cachedSqlEntityprocessor the indexing
> happens as follows,
> First entity x will get executed and the entire table gets stored in cache
> next entity y gets executed and entire table gets stored in cache
> Finally the compasion heppens through hash map .
> So always I need to have the memory allocated to SOLR JVM more than or equal
> to the data present in tables.
> One more issue is that even after SOLR completes indexing, the memory used
> previously is not getting released. I could still see the JVM consuming 1.5
> GB after the indexing completes. I tried to use Java hotspot options but
> didnt see any differences.. GC is not getting invoked even after a long time
> when using CachedSQLentity processor
> Main issue seem to be the fact that the CachedSQLentity processor cache is
> an unbounded HashMap, with no option to bound it.
> Reference:
> http://n3.nabble.com/Need-info-on-CachedSQLentity-processor-tt698418.html#a698418
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