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From "Vyacheslav Koptilin (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (IGNITE-12042) Atempt to remove entries from fully populated data region may result in IgineOutOfMemoryException
Date Mon, 05 Aug 2019 23:35:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-12042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16900475#comment-16900475
] 

Vyacheslav Koptilin edited comment on IGNITE-12042 at 8/5/19 11:34 PM:
-----------------------------------------------------------------------

Hello [~xtern],

First of all, thanks for your interest in this issue! :)

The test should catch the case when removing an entry(persistence and page eviction should
be disabled as well) requires allocating a new data page (\{{PagesListNodeIO}}) in order to
move the tracked page from one bucket of free-list to another, and there is not enough space
for that (fully exhausted data region).
 So, you need to play with the maximum size of the data region, the number of entries and
the size of the entry.
 For instance, {{byte[4000]}} works to me. I have updated the PR accordingly.

 


was (Author: slava.koptilin):
Hello [~xtern],

First of all, thanks for your interest in this issue! :)


The test should catch the case when removing an entry(persistence and page eviction should
be disabled as well) requires allocating a new dat page (PagesListNodeIO) in order to move
the tracked page from one bucket of free-list to another, and there is not enough space for
that (fully exhausted data region).
So, you need to play with the maximum size of the data region, the number of entries and the
size of the entry.
For instance, byte[4000] works to me. I have updated the PR accordingly.

 

> Atempt to remove entries from fully populated data region may result in IgineOutOfMemoryException
> -------------------------------------------------------------------------------------------------
>
>                 Key: IGNITE-12042
>                 URL: https://issues.apache.org/jira/browse/IGNITE-12042
>             Project: Ignite
>          Issue Type: Bug
>    Affects Versions: 2.7
>            Reporter: Vyacheslav Koptilin
>            Assignee: Vyacheslav Koptilin
>            Priority: Major
>             Fix For: 2.8
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Removing entries from non-persistent data region may require allocating a new data page
in order to move a tracked page from one bucket of the free-list to another one.



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