Re: Too many open files exception related to solrj getServer too often?

[Chris Hostetter]

Off the top of my head, i don't know hte answers to some of your 
questions, but as to the core cause of the exception...

: 3. server.query(solrQuery) throws SolrServerException.  How can concurrent
: solr queries triggers Too many open file exception?

...bear in mind that (as i understand it) the limit on open files is 
actually a limit on open file *descriptors* which includes network 
sockets.

a google search for java.net.SocketException: Too many open files will 
give you loads of results -- it's not specific to solr.

-Hoss

Re: Too many open files exception related to solrj getServer too often?

[cyang2010]

Just pushing up the topic and look for answers.

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Too many open files exception related to solrj getServer too often?

[cyang2010]

Hi,

I get this solrj error in development environment.

org.apache.solr.client.solrj.SolrServerException: java.net.SocketException:
Too many open files

At the time there was no reindexing or any write to the index.   There were
only different queries genrated using solrj to hit solr server:

CommonsHttpSolrServer server = new CommonsHttpSolrServer(url);
server.setSoTimeout(1000); // socket read timeout
server.setConnectionTimeout(1000);
server.setDefaultMaxConnectionsPerHost(100);
server.setMaxTotalConnections(100);
...
QueryResponse rsp = server.query(solrQuery);

I did NOT share reference of solrj CommonsHttpSolrServer among requests.  
So every http request will obtain a solj solr server instance and run query
on it.  

The question is:

1. Should solrj client share one instance of CommonHttpSolrServer?   Why? 
Is every CommonHttpSolrServer matched to one solr/lucene reader?  But from
the source code, it just shows it related to one apache http client.

2. Is TooManyOpenFiles exeption related to my possible wrong usage of
CommonHttpSolrServer?

3. server.query(solrQuery) throws SolrServerException.  How can concurrent
solr queries triggers Too many open file exception?


Look forward to your input.  Thanks,



cy

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