http://opensourceconnections.com/blog/2014/07/13/reindexing-collections-with-solrs-cursor-support/
-----Original Message----- From: Ajinkya Kale [mailto:kaleajin...@gmail.com] Sent: Monday, September 28, 2015 2:46 PM 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
