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Posted to dev@phoenix.apache.org by "Josh Elser (JIRA)" <ji...@apache.org> on 2018/03/05 20:13:00 UTC
[jira] [Resolved] (PHOENIX-4503) Phoenix-Spark plugin doesn't
release zookeeper connections
[ https://issues.apache.org/jira/browse/PHOENIX-4503?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Josh Elser resolved PHOENIX-4503.
---------------------------------
Resolution: Duplicate
Marking as a duplicate of PHOENIX-4489
> Phoenix-Spark plugin doesn't release zookeeper connections
> ----------------------------------------------------------
>
> Key: PHOENIX-4503
> URL: https://issues.apache.org/jira/browse/PHOENIX-4503
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 4.11.0
> Environment: HBase 1.2 on Linux (Ubuntu, CentOS)
> Reporter: Suhas Nalapure
> Priority: Major
>
> *1. Phoenix-Spark plugin doesn't release zookeeper connections*
> Example:
>
> {code:java}
> for(int i=0; i < 50; i++){
> Dataset<Row> df = sqlContext.read().format("org.apache.phoenix.spark")
> .option("table", "\"Sales\"").option("zkUrl", "localhost:2181")
> .load();
> df.show(2);
> }
> Thread.sleep(1000*60);
> {code}
>
> When the above snippet is executed, we can see number of connections to 2181 increasing and not getting released until after the main thread wakes up from sleep and program ends as can be seen below (14 is the number of connections even before the program starts to run) :
> netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 14
> 16:52:05
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 22
> 16:52:15
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 38
> 16:52:18
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 68
> 16:52:23
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 100
> 16:52:27
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 116
> 16:52:32
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 116
> 16:52:38
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 116
> 16:52:52
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 116
> 16:53:00
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 116
> 16:53:24
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 14
> 16:53:32
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 14
> 16:53:34
> root@user1 ~ $
> *2. Instead if "jdbc" format is used to create Spark Dataframe, the connection count doesn't shoot up*
> Example:
>
> {code:java}
> for(int i=0; i < 50; i++){
> Dataset<Row> df = sqlContext.read().format("jdbc")
> .option("url", "jdbc:phoenix:localhost:2181")
> .option("dbtable", "\"Sales\"")
> .option("driver", "org.apache.phoenix.jdbc.PhoenixDriver")
> .load();
> df.show(2);
> }
> Thread.sleep(1000*60);
> {code}
>
> Connection counts during program execution(14 being the count before execution starts):
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 14
> 17:00:42
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 14
> 17:00:43
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 16
> 17:00:46
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 16
> 17:00:50
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 16
> 17:00:55
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 16
> 17:01:12
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 16
> 17:01:18
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 16
> 17:01:28
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 16
> 17:01:34
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 16
> 17:01:37
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 16
> 17:01:39
> root@user1 ~ $ netstat -anp | grep 2181|grep EST| wc -l; date +"%H:%M:%S"
> 14
> 17:02:07
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