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Posted to issues@geode.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2019/08/12 19:16:00 UTC

[jira] [Commented] (GEODE-7066) Events can be lost in a gateway batch containing duplicate non-conflatable events with conflation enabled

    [ https://issues.apache.org/jira/browse/GEODE-7066?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16905507#comment-16905507 ] 

ASF subversion and git services commented on GEODE-7066:
--------------------------------------------------------

Commit 9e38830d399caeb169e90df6a42286e8455b9e56 in geode's branch refs/heads/feature/GEODE-7066 from Barry Oglesby
[ https://gitbox.apache.org/repos/asf?p=geode.git;h=9e38830 ]

GEODE-7066: Modified batch conflation to use event id instead of shadow key


> Events can be lost in a gateway batch containing duplicate non-conflatable events with conflation enabled
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: GEODE-7066
>                 URL: https://issues.apache.org/jira/browse/GEODE-7066
>             Project: Geode
>          Issue Type: Bug
>          Components: wan
>    Affects Versions: 1.9.0
>            Reporter: Barry Oglesby
>            Assignee: Barry Oglesby
>            Priority: Major
>
> If a batch contains duplicate CREATE and DESTROY events on key 1736 like below and conflation is enabled, the earlier events will be overwritten by the later events.
> {noformat}
> GatewaySenderEventImpl[id=EventID[id=31bytes;threadID=0x30004|6;sequenceID=6072];operation=CREATE;region=/SESSIONS;key=6079],
> GatewaySenderEventImpl[id=EventID[id=31bytes;threadID=0x30004|6;sequenceID=6073];operation=UPDATE;region=/SESSIONS;key=6079],
> GatewaySenderEventImpl[id=EventID[id=31bytes;threadID=0x30004|5;sequenceID=6009];operation=CREATE;region=/SESSIONS;key=1736],
> GatewaySenderEventImpl[id=EventID[id=31bytes;threadID=0x30004|6;sequenceID=6074];operation=DESTROY;region=/SESSIONS;key=6079],
> GatewaySenderEventImpl[id=EventID[id=31bytes;threadID=0x30004|5;sequenceID=6011];operation=DESTROY;region=/SESSIONS;key=1736],
> GatewaySenderEventImpl[id=EventID[id=31bytes;threadID=0x30004|6;sequenceID=6087];operation=CREATE;region=/SESSIONS;key=1736],
> GatewaySenderEventImpl[id=EventID[id=31bytes;threadID=0x30004|6;sequenceID=6089];operation=DESTROY;region=/SESSIONS;key=1736]
> {noformat}
> The batch will look like this after conflation:
> {noformat}
> GatewaySenderEventImpl[id=EventID[id=31 bytes;threadID=0x30004|6;sequenceID=6072];operation=CREATE;region=/SESSIONS;key=6079], 
> GatewaySenderEventImpl[id=EventID[id=31 bytes;threadID=0x30004|6;sequenceID=6073];operation=UPDATE;region=/SESSIONS;key=6079], 
> GatewaySenderEventImpl[id=EventID[id=31 bytes;threadID=0x30004|6;sequenceID=6087];operation=CREATE;region=/SESSIONS;key=1736], 
> GatewaySenderEventImpl[id=EventID[id=31 bytes;threadID=0x30004|6;sequenceID=6074];operation=DESTROY;region=/SESSIONS;key=6079], 
> GatewaySenderEventImpl[id=EventID[id=31 bytes;threadID=0x30004|6;sequenceID=6089];operation=DESTROY;region=/SESSIONS;key=1736]
> {noformat}
> All the events from threadID=0x30004|5 are gone.



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