[YSQL] [Table locks][Transactional DDL] GIN Index Creation Fails with 'ERROR: Expecting a used read time from the previous RPC but didn't find one' Error When Table-Level Locks and Transactional DDL Are Enabled

[hariharasudhan-yb]

Jira Link: DB-17271

Description

Existing cross functional tests involving GIN indexes are failing with the below error while creating gin indexes . This is observed in a run where both table-level locks and transactional DDL are enabled, in version 2.27.0.0-b227. Can you have a look ? One of the test runs logs - Logs

gin_index_with_colocation_index_backfill=# CREATE INDEX idx_tsv ON employees using ybgin(introduction);
ERROR:  ERROR:  Expecting a used read time from the previous RPC but didn't find one

This could be a regression, as the run with build b188 last week—where both flags were enabled—did not encounter this issue.

Flags enabled :

"MASTER":{
"enable_object_locking_for_table_locks":"true",
"allowed_preview_flags_csv":"enable_object_locking_for_table_locks",
"TEST_ysql_yb_ddl_transaction_block_enabled":"true"
}
"TSERVER:{
"enable_object_locking_for_table_locks":"true",
"allowed_preview_flags_csv":"enable_object_locking_for_table_locks",
"TEST_ysql_yb_ddl_transaction_block_enabled":"true"
}

Issue Type

kind/bug

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