Paul Wu created SPARK-6936: ------------------------------ Summary: SQLContext.sql() caused deadlock in multi-thread env Key: SPARK-6936 URL: https://issues.apache.org/jira/browse/SPARK-6936 Project: Spark Issue Type: Bug Components: SQL Affects Versions: 1.3.0 Environment: JDK 1.8.x, RedHat Linux version 2.6.32-431.23.3.el6.x86_64 (mockbu...@x86-027.build.eng.bos.redhat.com) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-4) (GCC) ) #1 SMP Wed Jul 16 06:12:23 EDT 2014
Reporter: Paul Wu Doing (the same query) in more than one threads with SQLConext.sql may lead to deadlock. Here is a way to reproduce it (since this is multi-thread issue, the reproduction may or may not be so easy). 1. Register a relatively big table. 2. Create two different classes and in the classes, do the same query in a method and put the results in a set and print out the set size. 3. Create two threads to use an object from each class in the run method. Start the threads. For my tests, it can have a deadlock just in a few runs. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org