[ https://issues.apache.org/jira/browse/SPARK-46861?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dongjoon Hyun updated SPARK-46861: ---------------------------------- Labels: pull-request-available releasenotes (was: pull-request-available) > Avoid Deadlock in DAGScheduler > ------------------------------ > > Key: SPARK-46861 > URL: https://issues.apache.org/jira/browse/SPARK-46861 > Project: Spark > Issue Type: Bug > Components: Scheduler > Affects Versions: 4.0.0, 3.5.1, 3.4.3 > Reporter: Fredrik Klauß > Assignee: Fredrik Klauß > Priority: Major > Labels: pull-request-available, releasenotes > Fix For: 4.0.0, 3.5.1, 3.4.3 > > > * The DAGScheduler could currently run into a deadlock with another thread if > both access the partitions of the same RDD at the same time. > * To make progress in getCacheLocs, we require both exclusive access to the > RDD partitions and the location cache. We first lock on the location cache, > and then on the RDD. > * When accessing partitions of an RDD, the RDD first acquires exclusive > access on the partitions, and then might acquire exclusive access on the > location cache. > * If thread 1 is able to acquire access on the RDD, while thread 2 holds the > access to the location cache, we can run into a deadlock situation. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org