Addressed the following issue from the review of the patch for

engine-independent statistics.
If a table was created for InnoDB then the execution of the
ANALYZE command over this table blocked any INSERT/DELETE/UPDATE
of the table. 

mysql-test/r/stat_tables_par.result

@@ -162,6 +162,46 @@ dbt3_s001	lineitem	i_l_shipdate	1	2.6500
 dbt3_s001	lineitem	i_l_suppkey	1	600.5000
 dbt3_s001	lineitem	i_l_suppkey_partkey	1	30.0250
 dbt3_s001	lineitem	i_l_suppkey_partkey	2	8.5786
+select * from mysql.index_stats where table_name='lineitem'
+ order by index_name, prefix_arity;
+db_name	table_name	index_name	prefix_arity	avg_frequency
+dbt3_s001	lineitem	PRIMARY	1	4.0033
+dbt3_s001	lineitem	PRIMARY	2	1.0000
+dbt3_s001	lineitem	i_l_commitdate	1	2.7160
+dbt3_s001	lineitem	i_l_orderkey	1	4.0033
+dbt3_s001	lineitem	i_l_orderkey_quantity	1	4.0033
+dbt3_s001	lineitem	i_l_orderkey_quantity	2	1.0404
+dbt3_s001	lineitem	i_l_partkey	1	30.0250
+dbt3_s001	lineitem	i_l_receiptdate	1	2.6477
+dbt3_s001	lineitem	i_l_shipdate	1	2.6500
+dbt3_s001	lineitem	i_l_suppkey	1	600.5000
+dbt3_s001	lineitem	i_l_suppkey_partkey	1	30.0250
+dbt3_s001	lineitem	i_l_suppkey_partkey	2	8.5786
+set debug_sync='RESET';
+set debug_sync='statistics_collection_start SIGNAL parked WAIT_FOR finish';
+use dbt3_s001;
+set use_stat_tables='preferably';
+analyze table lineitem persistent for all;
+set debug_sync='now WAIT_FOR parked';
+use dbt3_s001;
+set use_stat_tables='never';
+set debug_sync='now SIGNAL finish';
+set debug_sync='RESET';
+select * from mysql.index_stats where table_name='lineitem'
+  order by index_name, prefix_arity;
+db_name	table_name	index_name	prefix_arity	avg_frequency
+dbt3_s001	lineitem	PRIMARY	1	4.0033
+dbt3_s001	lineitem	PRIMARY	2	1.0000
+dbt3_s001	lineitem	i_l_commitdate	1	2.7160
+dbt3_s001	lineitem	i_l_orderkey	1	4.0033
+dbt3_s001	lineitem	i_l_orderkey_quantity	1	4.0033
+dbt3_s001	lineitem	i_l_orderkey_quantity	2	1.0404
+dbt3_s001	lineitem	i_l_partkey	1	30.0250
+dbt3_s001	lineitem	i_l_receiptdate	1	2.6477
+dbt3_s001	lineitem	i_l_shipdate	1	2.6500
+dbt3_s001	lineitem	i_l_suppkey	1	600.5000
+dbt3_s001	lineitem	i_l_suppkey_partkey	1	30.0250
+dbt3_s001	lineitem	i_l_suppkey_partkey	2	8.5786
 DROP DATABASE dbt3_s001;
 use test;
 set use_stat_tables=@save_use_stat_tables;

mysql-test/r/stat_tables_par_innodb.result

@@ -165,6 +165,52 @@ dbt3_s001	lineitem	i_l_shipdate	1	2.6500
 dbt3_s001	lineitem	i_l_suppkey	1	600.5000
 dbt3_s001	lineitem	i_l_suppkey_partkey	1	30.0250
 dbt3_s001	lineitem	i_l_suppkey_partkey	2	8.5786
+select * from mysql.index_stats where table_name='lineitem'
+ order by index_name, prefix_arity;
+db_name	table_name	index_name	prefix_arity	avg_frequency
+dbt3_s001	lineitem	PRIMARY	1	4.0033
+dbt3_s001	lineitem	PRIMARY	2	1.0000
+dbt3_s001	lineitem	i_l_commitdate	1	2.7160
+dbt3_s001	lineitem	i_l_orderkey	1	4.0033
+dbt3_s001	lineitem	i_l_orderkey_quantity	1	4.0033
+dbt3_s001	lineitem	i_l_orderkey_quantity	2	1.0404
+dbt3_s001	lineitem	i_l_partkey	1	30.0250
+dbt3_s001	lineitem	i_l_receiptdate	1	2.6477
+dbt3_s001	lineitem	i_l_shipdate	1	2.6500
+dbt3_s001	lineitem	i_l_suppkey	1	600.5000
+dbt3_s001	lineitem	i_l_suppkey_partkey	1	30.0250
+dbt3_s001	lineitem	i_l_suppkey_partkey	2	8.5786
+set debug_sync='RESET';
+set debug_sync='statistics_collection_start SIGNAL parked WAIT_FOR finish';
+use dbt3_s001;
+set use_stat_tables='preferably';
+analyze table lineitem persistent for all;
+set debug_sync='now WAIT_FOR parked';
+use dbt3_s001;
+set use_stat_tables='never';
+select * from lineitem where l_orderkey=1 and l_partkey=156;
+l_orderkey	l_partkey	l_suppkey	l_linenumber	l_quantity	l_extendedprice	l_discount	l_tax	l_returnflag	l_linestatus	l_shipDATE	l_commitDATE	l_receiptDATE	l_shipinstruct	l_shipmode	l_comment
+1	156	4	1	17	17954.55	0.04	0.02	N	O	1996-03-13	1996-02-12	1996-03-22	DELIVER IN PERSON	TRUCK	blithely regular ideas caj
+delete from lineitem where l_orderkey=1 and l_partkey=156;
+select * from lineitem where l_orderkey=1 and l_partkey=156;
+l_orderkey	l_partkey	l_suppkey	l_linenumber	l_quantity	l_extendedprice	l_discount	l_tax	l_returnflag	l_linestatus	l_shipDATE	l_commitDATE	l_receiptDATE	l_shipinstruct	l_shipmode	l_comment
+set debug_sync='now SIGNAL finish';
+set debug_sync='RESET';
+select * from mysql.index_stats where table_name='lineitem'
+  order by index_name, prefix_arity;
+db_name	table_name	index_name	prefix_arity	avg_frequency
+dbt3_s001	lineitem	PRIMARY	1	4.0027
+dbt3_s001	lineitem	PRIMARY	2	1.0000
+dbt3_s001	lineitem	i_l_commitdate	1	2.7155
+dbt3_s001	lineitem	i_l_orderkey	1	4.0027
+dbt3_s001	lineitem	i_l_orderkey_quantity	1	4.0027
+dbt3_s001	lineitem	i_l_orderkey_quantity	2	1.0404
+dbt3_s001	lineitem	i_l_partkey	1	30.0200
+dbt3_s001	lineitem	i_l_receiptdate	1	2.6473
+dbt3_s001	lineitem	i_l_shipdate	1	2.6496
+dbt3_s001	lineitem	i_l_suppkey	1	600.4000
+dbt3_s001	lineitem	i_l_suppkey_partkey	1	30.0200
+dbt3_s001	lineitem	i_l_suppkey_partkey	2	8.5771
 DROP DATABASE dbt3_s001;
 use test;
 set use_stat_tables=@save_use_stat_tables;

mysql-test/t/stat_tables_par.test

@@ -146,6 +146,56 @@ set debug_sync='RESET';
 
 select * from mysql.index_stats where table_name='lineitem' order by index_name;
 
+#
+# Test for parallel statistics collection and update (innodb)
+# 
+
+select * from mysql.index_stats where table_name='lineitem'
+ order by index_name, prefix_arity;
+set debug_sync='RESET';
+
+let $innodb_storage_engine= 0;
+if (`SELECT UPPER(@@storage_engine) = 'INNODB'`)
+{
+  let $innodb_storage_engine= 1;
+}
+
+connect (con1, localhost, root,,);
+connect (con2, localhost, root,,);
+
+connection con1;
+set debug_sync='statistics_collection_start SIGNAL parked WAIT_FOR finish';
+use dbt3_s001;
+set use_stat_tables='preferably';
+--send analyze table lineitem persistent for all
+
+connection con2;
+set debug_sync='now WAIT_FOR parked';
+use dbt3_s001;
+set use_stat_tables='never';
+if ($innodb_storage_engine)
+{
+  select * from lineitem where l_orderkey=1 and l_partkey=156;
+  delete from lineitem where l_orderkey=1 and l_partkey=156;
+  select * from lineitem where l_orderkey=1 and l_partkey=156;
+}
+set debug_sync='now SIGNAL finish';
+
+connection con1;
+--disable_result_log
+--disable_warnings
+--reap
+--enable_warnings
+--enable_result_log
+
+connection default;
+disconnect con1;
+disconnect con2;
+set debug_sync='RESET';
+
+select * from mysql.index_stats where table_name='lineitem'
+  order by index_name, prefix_arity;
+
 DROP DATABASE dbt3_s001;
 
 use test;

sql/sql_statistics.cc

@@ -2058,6 +2058,8 @@ int collect_statistics_for_table(THD *thd, TABLE *table)
   /* Perform a full table scan to collect statistics on 'table's columns */
   if (!(rc= file->ha_rnd_init(TRUE)))
   {  
+    DEBUG_SYNC(table->in_use, "statistics_collection_start");
+
     while ((rc= file->ha_rnd_next(table->record[0])) != HA_ERR_END_OF_FILE)
     {
       if (thd->killed)

storage/xtradb/handler/ha_innodb.cc

@@ -11078,7 +11078,8 @@ ha_innobase::store_lock(
 
 			prebuilt->select_lock_type = LOCK_NONE;
 			prebuilt->stored_select_lock_type = LOCK_NONE;
-		} else if (sql_command == SQLCOM_CHECKSUM) {
+		} else if (sql_command == SQLCOM_CHECKSUM ||
+                           sql_command == SQLCOM_ANALYZE) {
 			/* Use consistent read for checksum table */
 
 			prebuilt->select_lock_type = LOCK_NONE;