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# ==== Purpose ====
#
# This test ensures that binary log events are properly written to the
# binary log when compression is enabled and the size of the compressed
# event is higher than it's uncompressed counter-part.
#
# ==== Requirements ====
#
# R1. The compressed version of the event must be properly written to the
# binary log.
#
# ==== Implementation ====
#
# 1. Ensure server is freshly initialized.
# 2. Create a table with a blob column.
# 3. Prepare an insert statement and populate the blob columns with
# uncompressable data.
# 4. Ensure that the compressed event is in the binary log.
#
# ==== References ====
#
# BUG#32174715 STUCK "COMPRESSING TRANSACTION CHANGES." WHEN
# BINLOG_TRANSACTION_COMPRESSION
#
# 1. Ensure server is freshly initialized.
RESET MASTER;
# 2. Create a table with a blob column.
CREATE TABLE t1 (id bigint NOT NULL AUTO_INCREMENT PRIMARY KEY,
x mediumblob NOT NULL) ENGINE=InnoDB;
# 3. Prepare an insert statement and populate the blob columns with
# uncompressable data.
PREPARE s FROM "INSERT INTO t1 (x) VALUES (?)";
SET @a = LOAD_FILE('../../std_data/binlog_compression.gz');
EXECUTE s USING @a;
# 4. Ensure that the compressed event is in the binary log.
--let $event_sequence = !Gtid_or_anon # !DDL # !Gtid_or_anon # Transaction_payload # !Begin # Table_map # Write_rows # Xid
--let $include_trx_payload_events = 1
--source include/assert_binlog_events.inc
DROP TABLE t1;
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