Donald Smith created CASSANDRA-6215: ---------------------------------------
Summary: Possible space leak in datastax.driver.core Key: CASSANDRA-6215 URL: https://issues.apache.org/jira/browse/CASSANDRA-6215 Project: Cassandra Issue Type: Bug Components: Drivers (now out of tree) Environment: CentOS 6.4 Reporter: Donald Smith I wrote a java benchmark app that uses CQL cassandra-driver-core:1.0.3 and repeatedly saves to column families using code like: {noformat} final Insert writeReportInfo = QueryBuilder.insertInto(KEYSPACE_NAME, REPORT_INFO_TABLE_NAME).value("type",report.type.toString()).value(...) ... m_session.execute(writeReportInfo); {noformat} After running for about an hour, with -Xmx2000m, and writing about 20,000 reports (each with about 10000 rows), it got: java.lang.OutOfMemoryError: Java heap space. Using jmap and jhat I can see that the objects taking up space are {noformat} Instance Counts for All Classes (excluding platform) 1657280 instances of class com.datastax.driver.core.ColumnDefinitions$Definition 31628 instances of class com.datastax.driver.core.ColumnDefinitions 31628 instances of class [Lcom.datastax.driver.core.ColumnDefinitions$Definition; 31627 instances of class com.datastax.driver.core.PreparedStatement 31627 instances of class org.apache.cassandra.utils.MD5Digest ... {noformat} -- This message was sent by Atlassian JIRA (v6.1#6144)