Bug #20772273 : MYSQLIMPORT --USE-THREADS DOESN'T USE

                MULTIPLE THREADS

Description:- The utility "mysqlimport" does not use
multiple threads for the execution with option
"--use-threads". "mysqlimport" while importing multiple
files and multiple tables, uses a single thread even if the
number of threads are specified with "--use-threads" option.

Analysis:- This utility uses ifdef HAVE_LIBPTHREAD to check
for libpthread library and if defined uses libpthread
library for mutlithreaing. Since HAVE_LIBPTHREAD is not
defined anywhere in the source, "--use-threads" option is
silently ignored.

Fix:- "-DTHREADS" is set to the COMPILE_FLAGS  which will
enable pthreads. HAVE_LIBPTHREAD macro is removed.

1 files changed, 29 insertions, 0 deletions

diff --git a/mysql-test/t/mysqldump.test b/mysql-test/t/mysqldump.test
index 478d8fb2863..54780b95627 100644
--- a/mysql-test/t/mysqldump.test
+++ b/mysql-test/t/mysqldump.test
@@ -2401,3 +2401,32 @@ SET @@global.general_log=      @old_general_log_state;
 --echo #
 --echo # End of 5.1 tests
 --echo #
+
+--echo #
+--echo # Bug #20772273 : MYSQLIMPORT --USE-THREADS DOESN'T USE MULTIPLE THREADS
+--echo #
+
+CREATE DATABASE db_20772273;
+USE db_20772273;
+CREATE TABLE t1(a INT);
+INSERT INTO t1 VALUES (1), (2);
+CREATE TABLE t2(a INT);
+INSERT INTO t2 VALUES (3), (4);
+
+SELECT * FROM t1;
+SELECT * FROM t2;
+
+--exec $MYSQL_DUMP --tab=$MYSQLTEST_VARDIR/tmp/ db_20772273
+--exec $MYSQL db_20772273 < $MYSQLTEST_VARDIR/tmp/t1.sql
+--exec $MYSQL db_20772273 < $MYSQLTEST_VARDIR/tmp/t2.sql
+
+# Test mysqlimport with multiple threads
+--exec $MYSQL_IMPORT --silent --use-threads=2 db_20772273 $MYSQLTEST_VARDIR/tmp/t1.txt $MYSQLTEST_VARDIR/tmp/t2.txt
+
+SELECT * FROM t1;
+SELECT * FROM t2;
+
+#Cleanup
+DROP TABLE t1;
+DROP TABLE t2;
+DROP DATABASE db_20772273;