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f4b379d6ca
This should have been part of MDEV-12288. trx_undo_t::del_marks: Remove. Purge needs to process all undo log records in order to reset the DB_TRX_ID. Before MDEV-12288, it sufficed to only delete the purgeable delete-marked records, and it ignore other undo log. trx_rseg_t::needs_purge: Renamed from trx_rseg_t::last_del_marks. Indicates whether a rollback segment needs to be processed by purge. TRX_UNDO_NEEDS_PURGE: Renamed from TRX_UNDO_DEL_MARKS. Indicates whether a rollback segment needs to be processed by purge. This will be 1 until trx_purge_free_segment() has been invoked. row_purge_record_func(): Set the is_insert flag for TRX_UNDO_INSERT_REC, so that the DB_ROLL_PTR will match in row_purge_reset_trx_id(). trx_purge_fetch_next_rec(): Add a comment about row_purge_record_func() going to set the is_insert flag. trx_purge_read_undo_rec(): Always attempt to read the undo log record. trx_purge_get_next_rec(): Do not skip any undo log records. Even when no clustered index record is going to be removed, we may want to reset some DB_TRX_ID,DB_ROLL_PTR. trx_undo_rec_get_cmpl_info(), trx_undo_rec_get_extern_storage(): Remove. trx_purge_add_undo_to_history(): Set the TRX_UNDO_NEEDS_PURGE flag so that the resetting will work on undo logs that were originally created before MDEV-12288 (MariaDB 10.3.1). trx_undo_roll_ptr_is_insert(), trx_purge_free_segment(): Cleanup (should be no functional change).
102 lines
2.3 KiB
Plaintext
102 lines
2.3 KiB
Plaintext
SET GLOBAL innodb_purge_rseg_truncate_frequency=1;
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SET GLOBAL innodb_fast_shutdown=0;
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SET GLOBAL innodb_cmp_per_index_enabled=ON;
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SELECT * FROM information_schema.innodb_cmp_per_index;
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CREATE TABLE t (
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a INT,
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b VARCHAR(512),
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c VARCHAR(16),
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PRIMARY KEY (a),
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INDEX (b(512)),
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INDEX (c(16))
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) ENGINE=INNODB KEY_BLOCK_SIZE=2;
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SELECT
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database_name,
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table_name,
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index_name,
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compress_ops,
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compress_ops_ok,
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uncompress_ops
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FROM information_schema.innodb_cmp_per_index
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ORDER BY 1, 2, 3;
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database_name test
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table_name t
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index_name b
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compress_ops 1
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compress_ops_ok 1
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uncompress_ops 0
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database_name test
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table_name t
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index_name c
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compress_ops 1
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compress_ops_ok 1
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uncompress_ops 0
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database_name test
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table_name t
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index_name PRIMARY
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compress_ops 1
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compress_ops_ok 1
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uncompress_ops 0
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BEGIN;
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COMMIT;
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ALTER TABLE t DROP INDEX c;
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GRANT USAGE ON *.* TO 'tuser01'@'localhost' IDENTIFIED BY 'cDJvI9s_Uq';
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FLUSH PRIVILEGES;
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connect con1,localhost,tuser01,cDJvI9s_Uq,;
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connection con1;
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SELECT * FROM information_schema.innodb_cmp_per_index;
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ERROR 42000: Access denied; you need (at least one of) the PROCESS privilege(s) for this operation
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connection default;
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disconnect con1;
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DROP USER 'tuser01'@'localhost';
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SELECT
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database_name,
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table_name,
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index_name,
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CASE WHEN compress_ops=47 and @@innodb_compression_level IN (4,8,9) THEN 65
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ELSE compress_ops END as compress_ops,
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CASE WHEN compress_ops_ok=47 and @@innodb_compression_level IN (4,8,9) THEN 65
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ELSE compress_ops_ok END as compress_ops_ok,
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uncompress_ops
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FROM information_schema.innodb_cmp_per_index
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ORDER BY 1, 2, 3;
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database_name test
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table_name t
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index_name b
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compress_ops 43
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compress_ops_ok 43
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uncompress_ops 0
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database_name test
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table_name t
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index_name PRIMARY
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compress_ops 65
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compress_ops_ok 65
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uncompress_ops 0
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SET GLOBAL innodb_cmp_per_index_enabled=ON;
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SELECT COUNT(*) FROM t;
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COUNT(*) 128
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SELECT
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database_name,
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table_name,
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index_name,
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compress_ops,
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compress_ops_ok,
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CASE WHEN uncompress_ops=6 and @@innodb_compression_level IN (4,8,9) THEN 9
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ELSE uncompress_ops END as uncompress_ops
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FROM information_schema.innodb_cmp_per_index
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ORDER BY 1, 2, 3;
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database_name test
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table_name t
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index_name b
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compress_ops 0
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compress_ops_ok 0
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uncompress_ops 6
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database_name test
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table_name t
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index_name PRIMARY
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compress_ops 0
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compress_ops_ok 0
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uncompress_ops 5
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DROP TABLE t;
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SET GLOBAL innodb_cmp_per_index_enabled=default;
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