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https://issues.apache.org/jira/browse/SCB-909?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16633039#comment-16633039
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ASF GitHub Bot commented on SCB-909:
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cherrylzhao opened a new pull request #318: SCB-909 Add alpha TCC event scanner
for timeout and clean up completed globaltx (WIP)
URL: https://github.com/apache/incubator-servicecomb-saga/pull/318
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> Add fault tolerance for service comb TCC
> ----------------------------------------
>
> Key: SCB-909
> URL: https://issues.apache.org/jira/browse/SCB-909
> Project: Apache ServiceComb
> Issue Type: New Feature
> Components: Saga
> Affects Versions: saga-0.3.0
> Reporter: cherrylzhao
> Assignee: cherrylzhao
> Priority: Major
> Fix For: saga-0.3.0
>
>
> TCC fault tolerance incude following point.
> # omega can switch to another available alpha when sending message failed.
> # if omega resend logic (different alpha) failed, omega can rollback local
> data automatically.
> # alpha do resend logic (same omega) when ACK failed, if resend failed, dirty
> data can left in database, this will be handled by scanner.
> # design transaction timeout mechanics, if scanner found event won't
> completed within expected time, sending componsate command to omega, it has
> different type compare with normal.
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