[jira] [Updated] (PIG-4922) Deadlock between SpillableMemoryManager and InternalSortedBag$SortedDataBagIterator

["Rohini Palaniswamy (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PIG-4922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rohini Palaniswamy updated PIG-4922:
------------------------------------
    Attachment: PIG-4922-1.patch

Moved the sorting of the list that does getMemorySize outside synchronized(spillables) block as we have already made the copy of the list to spillablesSR. 

> Deadlock between SpillableMemoryManager and InternalSortedBag$SortedDataBagIterator
> -----------------------------------------------------------------------------------
>
>                 Key: PIG-4922
>                 URL: https://issues.apache.org/jira/browse/PIG-4922
>             Project: Pig
>          Issue Type: Bug
>            Reporter: Rohini Palaniswamy
>            Assignee: Rohini Palaniswamy
>             Fix For: 0.17.0, 0.16.1
>
>         Attachments: PIG-4922-1.patch
>
>
>   This one ran into a deadlock, when the data was really huge and InternalSortedBag was reading spilled data from disk.
> {code}
> grpd = FOREACH (GROUP data BY $0){
>     sorted = ORDER data BY timestamp DESC;
>     latest = LIMIT sorted 1;
>     GENERATE latest;
> };
> {code}



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