[ https://issues.apache.org/jira/browse/TEZ-4068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Eagles resolved TEZ-4068. ---------------------------------- Resolution: Fixed Fix Version/s: 0.9.3 0.10.1 Thanks [~Chyler] for patch and [~yingdachen] for review. Committed patch to master and branch-0.9. > Prevent new speculative attempt after task has issued canCommit to an attempt > ----------------------------------------------------------------------------- > > Key: TEZ-4068 > URL: https://issues.apache.org/jira/browse/TEZ-4068 > Project: Apache Tez > Issue Type: Improvement > Reporter: Jonathan Eagles > Assignee: Ying Han > Priority: Major > Fix For: 0.10.1, 0.9.3 > > Time Spent: 1h 40m > Remaining Estimate: 0h > > When a running attempt calls TaskImpl#canCommit through the taskUmbilical, > the TaskImpl will issue a "go" if it is the first attempt to do so. Otherwise > it will issue a "no-go". After commitAttempt is assigned is TaskImpl, no > other attempt is allowed to succeed at that point. So a speculative attempt > that is launched after commitAttempt is assigned can never finished before > the original since is will allows be given a "no-go" in the canCommit > response. In this jira, I propose to discuss disabling speculative attempts > after commitAttempt has been assigned. -- This message was sent by Atlassian JIRA (v7.6.3#76005)