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https://issues.apache.org/jira/browse/IGNITE-4756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16083691#comment-16083691
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Vadim Opolski commented on IGNITE-4756:
---------------------------------------
[~tledkov-gridgain] [~avinogradov] Log4JLogger dependency removed from core
module. Log have been initialize early. I'm working on printing cache group
name in log and calculating statistics only for loacal node. What the next step?
> Print info about partition distribution to log
> -----------------------------------------------
>
> Key: IGNITE-4756
> URL: https://issues.apache.org/jira/browse/IGNITE-4756
> Project: Ignite
> Issue Type: Improvement
> Components: general
> Reporter: Taras Ledkov
> Assignee: Vadim Opolski
> Priority: Minor
> Labels: newbie
> Fix For: 2.2
>
>
> Summarize discussions:
> Add log message in case partitions distribution is not close to even
> distribution:
> # Add system property IGNITE_PART_DISTRIBUTION_WARN_THRESHOLD with default
> value 0.1 to print warn message only when nodes count differs more then
> threshold;
> # The statistic is calculated and printed only for the local node;
> # Statistic is placed at the {{GridAffinityAssignmentCache#calculate}} and
> calculated for new {{idealAssignment}}.
> # Message format is
> {noformat}
> Local node affinity assignment distribution is not ideal [cache=<cache_name>,
> expectedPrimary=<ideal_count_of_primary_partitions>,
> exectedBackups=<ideal_count_of_backups>,
> primary=<count_of_primary_partitions>, backups=<count_of_backup_partitions>].
> {noformat}
> e.g. for cache with name "test", 2 backups, 4 partition, 3 nodes:
> {noformat}
> Local node affinity assignment distribution is not ideal [cache=test,
> expectedPrimary=1.33 (33.3%), exectedBackups=2.66 (66.66%), primary=1 (25%),
> backups=4(100%)].
> {noformat}
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