# When a Java process with ES Client terminate, does it automatically close the connection? **URL:** \ **Category:** Elasticsearch\ **Created:** [February 25, 2014, 9:07am UTC](https://discuss.elastic.co/t/when-a-java-process-with-es-client-terminate-does-it-automatically-close-the-connection/16003 "2014-02-25T09:07:12Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Arinto\_Murdopo](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/arinto_murdopo/32/1779_2.png) [@Arinto\_Murdopo](https://discuss.elastic.co/u/Arinto_Murdopo)\ **Post date:** [February 25, 2014, 9:07am UTC](https://discuss.elastic.co/t/when-a-java-process-with-es-client-terminate-does-it-automatically-close-the-connection/16003/1 "2014-02-25T09:07:12Z")
Hi all, A question on Java API for ElasticSearch. When a Java process with ES Client terminate, does it automatically close the connection? Or we should explicitly close the connection to save the resources? Best regards, Arinto -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/27516684-8413-4e2c-9c44-021baf85b952%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/27516684-8413-4e2c-9c44-021baf85b952%40googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![jprante](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jprante/32/44941_2.png) [@jprante](https://discuss.elastic.co/u/jprante)\ **Post date:** [February 25, 2014, 9:41am UTC](https://discuss.elastic.co/t/when-a-java-process-with-es-client-terminate-does-it-automatically-close-the-connection/16003/2 "2014-02-25T09:41:58Z")
Yes, you should always call close() in your code if you want to exit. There is no automatic call to client close() when a JVM exits. If the JVM exits, connections will be aborted and throw errors, mostly you can see them in the cluster logs (IOExceptions, "connection reset by peer", or timeouts). If the client is closed with close(), the resources the client holds are released back to the JVM (connections/sockets, thread pool, caches). ES waits for threads to complete if they are active. Also in this case, open connections will be forcefully closed, even if operations (executed by other threads using the client) are still ongoing, but the message will be different, the cluster can react gracefully. Jörg On Tue, Feb 25, 2014 at 10:07 AM, Arinto Murdopo [arinto@gmail.com](mailto:arinto@gmail.com) wrote: > Hi all, > > A question on Java API for Elasticsearch. When a Java process with ES > Client terminate, does it automatically close the connection? Or we should > explicitly close the connection to save the resources? > > Best regards, > > Arinto > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > To view this discussion on the web visit > [https://groups.google.com/d/msgid/elasticsearch/27516684-8413-4e2c-9c44-021baf85b952%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/27516684-8413-4e2c-9c44-021baf85b952%40googlegroups.com) > . > For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/CAKdsXoFPv%2BU0ACptRcgUs9%3D%2BAx%2B0Ayox\_923dpHYMHS0bwzAVQ%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAKdsXoFPv%2BU0ACptRcgUs9%3D%2BAx%2B0Ayox_923dpHYMHS0bwzAVQ%40mail.gmail.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 1:47am UTC](https://discuss.elastic.co/t/when-a-java-process-with-es-client-terminate-does-it-automatically-close-the-connection/16003/3 "2017-07-06T01:47:33Z")