gpdb

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[WIP] Improve gp_hyperloglog codes and add tests for it.

1

This patch helps remove redundant base64 encoding and decoding functions in gp_hyperloglog.c and add test cases for gp_hyperloglog. 1. Postgres upstream provides the implementation of base64 encoding and decoding utilities....

higuoxing

[6X][WIP]Enable direct dispatch in deep-slice queries

1

About ten years ago, direct dispatch in deep-slice queries has been disabled due to the following case that found DTM issue with targeted dispatch and deepslice queries. ``` set test_print_direct_dispatch_info...

QingMa-gp

[WIP] Fix damped scale factor calculation

1

Correctly implement exponential backoff to damp scale factor ## Here are some reminders before you submit the pull request - [ ] Add tests for the change - [ ]...

l-wang

[WIP] Liberate tablespaces from Greenplum dbid

3

A segment's dbid uniquely identifies it among all postmasters within a Greenplum cluster. This is primarily used by FTS. This was repurposed for user-defined tablespaces. Each segment would append a...

asimrp

WIP: ALter Table Alter Column Type AOCO table optimization

1

Append-optimised column oriented (AOCO) tables are organised as one file per column at storage layer. This layout is amenable to optimisation in case of ALTER TABLE ALTER COLUMN command where...

gkokolatos

This is backport of https://github.com/greenplum-db/gpdb/pull/13891. Commits start blocking only if STREAMING or CATCHUP within range. In real scenarios it often happens that the mirror node is down (probably not really...

haolinw

Enable catchup within range on segment.

1

Commits start blocking only if STREAMING or CATCHUP within range. In real scenarios it often happens that the mirror node is down (probably not really down) and out-of-sync for some...

haolinw

Use f_smgr interface for storage operations

13

The purpose of this Pull Request is to bring f_smgr interface back to Greenplum storage. SMGR interface present in PostgreSQL source code since its first [git commit ](https://github.com/postgres/postgres/blob/d31084e9d1118b25fd16580d9d8c2924b5740dff/src/backend/storage/smgr/smgr.c#L28). It's very...

reshke

Improving gprecoverseg performance by parallel execution of checks

11

Previously in gprecoverseg when we try to stop the segments it was taking too long to get and verify the list of postmaster processes on segments as this part was...

piyushc01

Add throttle logic to slow down WAL writes in CATCHUP phase.

4

There was a guc repl_catchup_within_range that "Sets the maximum number of xlog segments allowed to lag when the backends can start blocking despite the WAL sender being in catchup phase."...

haolinw