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https://issues.apache.org/jira/browse/IGNITE-12042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16901302#comment-16901302
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Vyacheslav Koptilin edited comment on IGNITE-12042 at 8/8/19 10:34 AM:
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Thank you, Pavel, for the review!
So, I would propose to change the formula as follows:
{code:java}
boolean oomThreshold = (memorySize / pageMem.systemPageSize()) <
(datarow.size() / pageMem.pageSize() + nonEmptyPages * (8.0 * 1.5 /
pageMem.pageSize() + 1) + 256 /one page per bucket/);{code}
where:
{{memorySize / pageMem.systemPageSize()) - total pages}}
{{datarow.size() / pageMem.pageSize() - data row pages}}
{{nonEmptyPages * (8.0 * 1.5 / pageMem.pageSize() + 1) - nonEmptyPages +
linkPages (multiplied by 1.5)}}
{{256 - additional pages reserved for buckets of FreeList}}
{{What do you think, [~xtern] [~ivan.glukos]? I am ready to update the PR and
re-run TC. :)}}
was (Author: slava.koptilin):
Thank you, Pavel, for the review!
So, I would propose to change the formula as follows:
{code:java}
boolean oomThreshold = (memorySize / pageMem.systemPageSize()) <
(datarow.size() / pageMem.systemPageSize() + nonEmptyPages * (8.0 * 1.5 /
pageMem.pageSize() + 1) + 256 /one page per bucket/);{code}
where:
{{memorySize / pageMem.systemPageSize()) - total pages}}
{{datarow.size() / pageMem.systemPageSize() - data row pages}}
{{nonEmptyPages * (8.0 * 1.5 / pageMem.pageSize() + 1) - nonEmptyPages +
linkPages (multiplied by 1.5)}}
{{256 - additional pages reserved for buckets of FreeList}}
{{What do you think, [~xtern] [~ivan.glukos]? I am ready to update the PR and
re-run TC. :)}}
> 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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