On Sat, Jul 6, 2019 at 8:26 PM Dilip Kumar <dilipbal...@gmail.com> wrote: > > On Thu, Jul 4, 2019 at 5:24 PM Amit Kapila <amit.kapil...@gmail.com> wrote: > > > PFA, the latest version of the undo interface and undo processing patches. > > Summary of the changes in the patch set > > 1. Undo Interface > - Rebased over latest undo storage code > - Implemented undo page compression (don't store the common fields in > all the records instead we get from the first complete record of the > page). > - As per Robert's comment, UnpackedUndoRecord is divided in two parts, > a) All fields which are set by the caller. > b) Pointer to structures which are set internally. > - Epoch and the Transaction id are unified as full transaction id > - Fixed handling of dbid during recovery (TODO in PrepareUndoInsert) > > Pending: > - Move loop in UndoFetchRecord to outside and test performance with > keeping pin vs pin+lock across undo records. This will be done after > testing performance over the zheap code. > - I need to investigate whether Discard checking can be unified in > master and HotStandby in UndoFetchRecord function. > > 2. Undo Processing > - Defect fix in multi-log rollback for subtransaction. > - Assorted defect fixes. > > Others > - Fixup for undo log code to handle full transaction id in > UndoLogSlot for discard and other bug fixes in undo log. > - Fixup for Orphan file cleanup to pass dbid in PrepareUndoInsert > PFA, updated patch version which includes - One defect fix in undo interface related to undo page compression for handling persistence level - Implemented pending TODO optimization in undo page compression. - One defect fix in undo processing related to the prepared transaction
-- Regards, Dilip Kumar EnterpriseDB: http://www.enterprisedb.com
undo_20190709.tar.gz
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