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https://issues.apache.org/jira/browse/TRAFODION-2623?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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liu ming updated TRAFODION-2623:
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Issue Type: New Feature (was: Bug)
> Port Esgyn DTM changes to Trafodion
> -----------------------------------
>
> Key: TRAFODION-2623
> URL: https://issues.apache.org/jira/browse/TRAFODION-2623
> Project: Apache Trafodion
> Issue Type: New Feature
> Components: dtm
> Affects Versions: 2.2-incubating
> Reporter: Sean Broeder
> Assignee: Sean Broeder
> Fix For: 2.2-incubating
>
>
> There are a very large number of changes present in the DTM components from
> Esgyn that are not present in Trafodion. It is not practicable to cherry
> pick these changes as the two environments are quite different and every
> cherry pick attempt I tried involved complicated manual merges. As a
> consequence, a large port of DTM changes en masse would be both easier
> approach and also safer since the Esgyn code has been much more thoroughly
> tested.
> A sample of the fixes included are:
> Dozens of bug fixes
> Improved recovery after HBase failures
> Better error reporting and tracing, which includes region keys for easier
> debugging
> Reduced UnknownTransactionExceptions resulting from duplicate transaction
> registration
> Better TLOG management including reducing the default number of tables
> This is the first porting of Esgyn changes. There will need to be additional
> , smaller porting effort. Ultimately the goal is to get the 2 DTM version
> close enough that cherry picking will become normal and future mass portings
> will not be necessary.
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