[ https://issues.apache.org/jira/browse/FLINK-9047?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16409235#comment-16409235 ]
Till Rohrmann edited comment on FLINK-9047 at 3/22/18 8:51 AM: --------------------------------------------------------------- Sorry [~sihuazhou], I saw your comment too late. But maybe you could review my PR. was (Author: till.rohrmann): Sorry [~sihuazhou], I saw your comment to late. But maybe you could review my PR. > SlotPool can fail to release slots > ---------------------------------- > > Key: FLINK-9047 > URL: https://issues.apache.org/jira/browse/FLINK-9047 > Project: Flink > Issue Type: Bug > Components: Distributed Coordination > Affects Versions: 1.5.0 > Reporter: Till Rohrmann > Assignee: Till Rohrmann > Priority: Blocker > Labels: flip-6 > Fix For: 1.5.0 > > > The {{SlotPool}} releases idling slots. If the release operation fails (e.g. > timeout), then it simply continues using the slot. This is problematic if the > owning {{TaskExecutor}} failed before and was unregistered in the meantime > from the {{SlotPool}}. As a result, the {{SlotPool}} will reuse the slot and > whenever it tries to return because it is idling it will fail again. This, > effectively, renders the scheduling of a job impossible. -- This message was sent by Atlassian JIRA (v7.6.3#76005)