Hi - you need to use the CursorMark feature for larger sets: https://cwiki.apache.org/confluence/display/solr/Pagination+of+Results M.
-----Original message----- > From:Ajinkya Kale <kaleajin...@gmail.com> > Sent: Monday 28th September 2015 20:46 > To: solr-user@lucene.apache.org; java-u...@lucene.apache.org > Subject: Solr java.lang.OutOfMemoryError: Java heap space > > Hi, > > I am trying to retrieve all the documents from a solr index in a batched > manner. > I have 100M documents. I am retrieving them using the method proposed here > https://nowontap.wordpress.com/2014/04/04/solr-exporting-an-index-to-an-external-file/ > I am dumping 10M document splits in each file. I get "OutOfMemoryError" if > start is at 50M. I get the same error even if rows=10 for start=50M. > Curl on start=0 rows=50M in one go works fine too. But things go bad when > start is at 50M. > My Solr version is 4.4.0. > > Caused by: java.lang.OutOfMemoryError: Java heap space > at > org.apache.lucene.search.TopDocsCollector.topDocs(TopDocsCollector.java:146) > at > org.apache.solr.search.SolrIndexSearcher.getDocListNC(SolrIndexSearcher.java:1502) > at > org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:1363) > at > org.apache.solr.search.SolrIndexSearcher.search(SolrIndexSearcher.java:474) > at > org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:434) > at > org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:208) > at > org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135) > at org.apache.solr.core.SolrCore.execute(SolrCore.java:1904) > > --aj >
