Support separation of catalog and compute#138

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HuSen8891 wants to merge 10 commits intoapache:mainfrom

Commits on Aug 10, 2023

Commits on Aug 11, 2023

1. add global variable enable_serverless, default to false, set to true in plugin.
husen
committed

Commits on Aug 15, 2023

rename json_object to pg_json_object to resolve conflict with library jansson
husen
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Commits on Aug 16, 2023

disable WAL-log information required only for Hot Standby in serverless
husen
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Commits on Aug 20, 2023

Add support for creating cluster with single master, and only query on catalog is permitted on single master without warehouse.
HuSen8891
committed

Commits on Aug 23, 2023

Add: Support to create hashdata table with randomly distribution.
HuSen8891
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Commits on Aug 29, 2023

1. set distributedXid to LocalTransactionId 2. do not send FTS Probe Request
HuSen8891
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Commits on Aug 31, 2023

Feature: support subtransaction and savepoint
HuSen8891
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Commits on Sep 1, 2023

Fix: Only master can set transaction status
HuSen8891
committed