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3b10e8f80c
row_sel_sec_rec_is_for_clust_rec() treats empty BLOB prefix field in secondary index as a field equal to any external BLOB field in clustered index. Row_sel_get_clust_rec_for_mysql::operator() doesn't zerro out clustered record pointer in row_search_mvcc(), and row_search_mvcc() thinks that delete-marked secondary index record has visible for "CHECK TABLE"'s read view old-versioned clustered index record, and row_scan_index_for_mysql() counts it as a row. The fix is to execute row_sel_sec_rec_is_for_blob() in row_sel_sec_rec_is_for_clust_rec() if clustered field contains BLOB's reference.
26 lines
840 B
Text
26 lines
840 B
Text
--source include/innodb_row_format.inc
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--source include/count_sessions.inc
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--connect(prevent_purge,localhost,root,,)
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start transaction with consistent snapshot;
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--connection default
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SET @fill_amount = (@@innodb_page_size / 2 ) + 1;
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CREATE TABLE t1 (col_text TEXT NOT NULL, KEY (col_text(9))) ENGINE=InnoDB;
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INSERT INTO t1 (col_text) VALUES (REPEAT('x', @fill_amount));
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UPDATE t1 SET col_text='';
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UPDATE t1 SET col_text=REPEAT('y', @fill_amount);
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--connect(con1,localhost,root,,)
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SET @fill_amount = (@@innodb_page_size / 2 ) + 1;
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BEGIN;
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INSERT INTO t1 (col_text) VALUES (REPEAT('z', @fill_amount));
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--connection default
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# If the bug is not fixed, CHECK TABLE will complain about wrong secondary index
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# rows count
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CHECK TABLE t1;
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--disconnect con1
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--disconnect prevent_purge
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DROP TABLE t1;
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--source include/wait_until_count_sessions.inc
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