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Rajesh Balamohan commented on TEZ-3719: --------------------------------------- Patch lgtm. +1 pending jenkins tests. > DAGImpl.computeProgress slows down dispatcher and ipc threads > ------------------------------------------------------------- > > Key: TEZ-3719 > URL: https://issues.apache.org/jira/browse/TEZ-3719 > Project: Apache Tez > Issue Type: Bug > Reporter: Rajesh Balamohan > Assignee: Gopal V > Attachments: dispatcher_holding_lock.png, TEZ-3719.1.patch, > TEZ-3719.wip.patch, tez_computeProgress_waiting_for_lock.png > > > The Vertex readLock is held while computing progress, which prevents > scheduling of tasks from happening on that vertex (which needs a writeLock). > Making the locked section do as little work as possible would speedup the AM. -- This message was sent by Atlassian JIRA (v6.3.15#6346)