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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (STORM-3319) Slot can fail assertions in some cases
Date Fri, 08 Mar 2019 11:42:00 GMT

     [ https://issues.apache.org/jira/browse/STORM-3319?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

ASF GitHub Bot updated STORM-3319:
----------------------------------
    Labels: pull-request-available  (was: )

> Slot can fail assertions in some cases
> --------------------------------------
>
>                 Key: STORM-3319
>                 URL: https://issues.apache.org/jira/browse/STORM-3319
>             Project: Apache Storm
>          Issue Type: Bug
>    Affects Versions: 2.0.0
>            Reporter: Stig Rohde Døssing
>            Assignee: Stig Rohde Døssing
>            Priority: Major
>              Labels: pull-request-available
>
> {quote}
> 2019-01-19 22:47:03.045 [SLOT_1024] ERROR org.apache.storm.daemon.supervisor.Slot - Error
when processing event
> java.lang.AssertionError: null
> 	at org.apache.storm.daemon.supervisor.Slot.handleEmpty(Slot.java:781) ~[classes/:?]
> 	at org.apache.storm.daemon.supervisor.Slot.stateMachineStep(Slot.java:217) ~[classes/:?]
> 	at org.apache.storm.daemon.supervisor.Slot.run(Slot.java:900) [classes/:?]
> 2019-01-19 22:47:03.045 [SLOT_1025] ERROR org.apache.storm.daemon.supervisor.Slot - Error
when processing event
> java.lang.AssertionError: null
> 	at org.apache.storm.daemon.supervisor.Slot.handleEmpty(Slot.java:781) ~[classes/:?]
> 	at org.apache.storm.daemon.supervisor.Slot.stateMachineStep(Slot.java:217) ~[classes/:?]
> 	at org.apache.storm.daemon.supervisor.Slot.run(Slot.java:900) [classes/:?]
> {quote}
> The issue is that Slot tries to go from WAITING_FOR_LOCALIZATION to EMPTY when there's
an exception downloading a blob. It then fails one of the assertions in EMPTY because it doesn't
clear its pendingChangingBlobsAssignment field.
> There's no reason to go back to EMPTY. The Slot still wants to download some blobs, so
it should just restart the downloads and go back to WAITING_FOR_LOCALIZATION.



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