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https://issues.apache.org/jira/browse/HIVE-17691?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eugene Koifman updated HIVE-17691:
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Summary: Miscellaneous List (was: Misc Nits)
> Miscellaneous List
> ------------------
>
> Key: HIVE-17691
> URL: https://issues.apache.org/jira/browse/HIVE-17691
> Project: Hive
> Issue Type: Sub-task
> Components: Transactions
> Reporter: Eugene Koifman
>
> # DDLSemanticAnalyzer.alterTableOutput is unused
> # DDLTask.generateAddMmTasks(Table) - stmtId should probably come from
> TransactionManager
> # DDLTask.createTable(Hive db, CreateTableDesc crtTbl) has _Long mmWriteId =
> crtTbl.getInitialMmWriteId();_ logic is unclear.. this ID is only set in one
> place..
> # FileSinkOperator has multiple places that look like _conf.getWriteType() ==
> AcidUtils.Operation.NOT_ACID || conf.isMmTable()_ - what is the writeType for
> MM tables? Seems that Wei opted for "work.getLoadTableWork().getWriteType()
> != AcidUtils.Operation.NOT_ACID && !tbd.isMmTable()" to mean MM, e.g.
> MoveTask.handleStaticParts() call to Hive.loadPartition()
> # HiveConf.HIVE_TXN_OPERATIONAL_PROPERTIES - the doc/explanation there is
> obsolete
> # Compactor Initiator likely doesn't work for MM tables. It's triggered by
> into in TXN_COMPONENTS/COMPLETED_TXN_COMPONENTS. MM tables don't write to
> either because DbTxnManager.acquireLocks() does
> _compBuilder.setIsAcid(AcidUtils.isFullAcidTable(t));_ i.e. it treats MM as
> non-acid tables
> # In general integration with full Acid seems confused wrt to MM and seems to
> treat MM as special table type rather than subtype of Acid table. (mostly,
> but not always).
> # LoadSemanticAnalyzer.analyzeInternal(ASTNode) sets statementId to 0 rather
> than from TM
> # ImportCommitTask - doesn't currently do anything. It used to commit mmID.
> Need to verify we properly commit the txn in the Driver
> # As far as I can tell all the mm_*.q tests run on TestCliDriver which means
> MR. This doesn't exercise some code specifically for dealing with writes
> from Union All queries (CTAS, Insert into). On MR this requires
> "hive.optimize.union.remove=true" (false by default)
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