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MDEV-28540 Deprecate and ignore the parameter innodb_prefix_index_cluster_optimization

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The parameter innodb_prefix_index_cluster_optimization used to enable an
optimization that was added in cb37c55768
and was disabled by default.

We will unconditionally enable the extension and mark the parameter
as deprecated.

Related to this, the counters
Innodb_secondary_index_triggered_cluster_reads and
Innodb_secondary_index_triggered_cluster_reads_avoided
allowed to determine the usefulness of this optimization.

Now that the configuration parameter is disabled, the counters
do not serve any useful purpose and can be removed.

row_search_with_covering_prefix(): Fix a bug that caused an
incorrect result to be returned.
This commit is contained in:
Marko Mäkelä
2022-05-13 18:07:39 +03:00
parent 0dab74ff3f
commit fdc039db29
15 changed files with 11 additions and 1024 deletions
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2
mysql-test/suite/innodb/r/innodb_skip_innodb_is_tables.result
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@ -70,8 +70,6 @@ buffer_pool_pages_free buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL N
buffer_pages_created buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of pages created (innodb_pages_created)
buffer_pages_written buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of pages written (innodb_pages_written)
buffer_pages_read buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of pages read (innodb_pages_read)
buffer_index_sec_rec_cluster_reads buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of secondary record reads triggered cluster read
buffer_index_sec_rec_cluster_reads_avoided buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Number of secondary record reads avoided triggering cluster read
buffer_data_reads buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Amount of data read in bytes (innodb_data_reads)
buffer_data_written buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 status_counter Amount of data written in bytes (innodb_data_written)
buffer_flush_batch_scanned buffer 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 set_owner Total pages scanned as part of flush batch