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Prateek commented on CASSANDRA-6259: ------------------------------------ Ping. Any updates on this? Let me know if I can provide further information. Many thanks. -Prateek > Cassandra 2.0.1 server has too many tcp connections in CLOSE_WAIT > ----------------------------------------------------------------- > > Key: CASSANDRA-6259 > URL: https://issues.apache.org/jira/browse/CASSANDRA-6259 > Project: Cassandra > Issue Type: Bug > Reporter: Prateek > Assignee: Sylvain Lebresne > > We are using cassandra 2.0.1 server with cascading client. The cassandra tap > used is https://github.com/ifesdjeen/cascading-cassandra (1.0.0-rc6). The > problem arises after the server is running for a few days. The server has > 100,000+ connections in tcp CLOSE_WAIT state and cannot accept any more > connections. All map reduce jobs start failing. This seems to be a bug with > cassandra 2.0.1 server not closing connections properly. > [(bloomreach-ami) ubuntu@ip-10-91-15-6 :/mnt/cassandra/data]# lsof -n | grep > java | grep CLOSE_WAIT | wc -l > 116321 > java 25427 ubuntu *537u IPv4 9337512 0t0 > TCP 10.91.15.6:9042->10.171.11.168:34217 (CLOSE_WAIT) > java 25427 ubuntu *540u IPv4 9107933 0t0 > TCP 10.91.15.6:9042->10.92.99.19:45820 (CLOSE_WAIT) > java 25427 ubuntu *543u IPv4 9110100 0t0 > TCP 10.91.15.6:9042->10.86.106.249:47585 (CLOSE_WAIT) > java 25427 ubuntu *544u IPv4 9110072 0t0 > TCP 10.91.15.6:9042->10.86.106.249:47364 (CLOSE_WAIT) > java 25427 ubuntu *546u IPv4 9110110 0t0 > TCP 10.91.15.6:9042->10.92.99.19:46162 (CLOSE_WAIT) > java 25427 ubuntu *547u IPv4 9110093 0t0 > TCP 10.91.15.6:9042->10.86.106.249:47518 (CLOSE_WAIT) > java 25427 ubuntu *548u IPv4 9337583 0t0 > TCP 10.91.15.6:9042->10.171.11.168:34361 (CLOSE_WAIT) > java 25427 ubuntu *549u IPv4 9110114 0t0 > TCP 10.91.15.6:9042->10.92.99.19:46212 (CLOSE_WAIT) > java 25427 ubuntu *551u IPv4 9110117 0t0 -- This message was sent by Atlassian JIRA (v6.1#6144)