Bug#35161: --myisam-recover does not work for partitioned MyISAM tables

Problem was that auto_repair, is_crashed and check_and_repair was not
implemented in ha_partition.

Solution, implemented them as loop over all partitions for is_crashed and
check_and_repair, and using the first partition for auto_repair.

(Recommit after fixing review comments)

mysql-test/lib/mtr_report.pl

@@ -402,7 +402,10 @@ sub mtr_report_stats ($) {
 		 )) or
 
                 # Test case for Bug#31590 produces the following error:
-                /Out of sort memory; increase server sort buffer size/
+                /Out of sort memory; increase server sort buffer size/ or
+
+                # Bug#35161, test of auto repair --myisam-recover
+                /able.*_will_crash/
 		)
             {
               next;                       # Skip these lines

mysql-test/suite/parts/r/partition_repair_myisam.result

+CREATE TABLE t1_will_crash (a INT, KEY (a)) ENGINE=MyISAM;
+INSERT INTO t1_will_crash VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10), (11);
+FLUSH TABLES;
+# replacing t1.MYI with a corrupt + unclosed one created by doing:
+# 'create table t1 (a int key(a))' head -c1024 t1.MYI > corrupt_t1.MYI 
+SELECT * FROM t1_will_crash;
+a
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+Warnings:
+Error	145	Table './test/t1_will_crash' is marked as crashed and should be repaired
+Error	1194	Table 't1_will_crash' is marked as crashed and should be repaired
+Error	1034	1 client is using or hasn't closed the table properly
+Error	1034	Size of indexfile is: 1024        Should be: 2048
+Error	1034	Size of datafile is: 77       Should be: 7
+Error	1034	Number of rows changed from 1 to 11
+DROP TABLE t1_will_crash;
+CREATE TABLE t1_will_crash (a INT, KEY (a))
+ENGINE=MyISAM
+PARTITION BY HASH(a)
+PARTITIONS 3;
+INSERT INTO t1_will_crash VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10), (11);
+FLUSH TABLES;
+# replacing t1#P#p1.MYI with a corrupt + unclosed one created by doing:
+# 'create table t1 (a int key(a)) partition by hash (a) partitions 3'
+# head -c1024 t1#P#p1.MYI > corrupt_t1#P#p1.MYI 
+SELECT * FROM t1_will_crash;
+a
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+Warnings:
+Error	145	Table './test/t1_will_crash#P#p1' is marked as crashed and should be repaired
+Error	1194	Table 't1_will_crash' is marked as crashed and should be repaired
+Error	1034	1 client is using or hasn't closed the table properly
+Error	1034	Size of indexfile is: 1024        Should be: 2048
+Error	1034	Size of datafile is: 28       Should be: 7
+Error	1034	Number of rows changed from 1 to 4
+DROP TABLE t1_will_crash;

mysql-test/suite/parts/t/partition_repair_myisam-master.opt

+--myisam-recover

mysql-test/suite/parts/t/partition_repair_myisam.test

+--source include/have_partition.inc
+--disable_warnings
+--disable_query_log
+drop table if exists t1_will_crash;
+--enable_query_log
+--enable_warnings
+
+
+CREATE TABLE t1_will_crash (a INT, KEY (a)) ENGINE=MyISAM;
+INSERT INTO t1_will_crash VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10), (11);
+FLUSH TABLES;
+--echo # replacing t1.MYI with a corrupt + unclosed one created by doing:
+--echo # 'create table t1 (a int key(a))' head -c1024 t1.MYI > corrupt_t1.MYI 
+--remove_file $MYSQLTEST_VARDIR/master-data/test/t1_will_crash.MYI
+--copy_file std_data/corrupt_t1.MYI $MYSQLTEST_VARDIR/master-data/test/t1_will_crash.MYI
+SELECT * FROM t1_will_crash;
+DROP TABLE t1_will_crash;
+CREATE TABLE t1_will_crash (a INT, KEY (a))
+ENGINE=MyISAM
+PARTITION BY HASH(a)
+PARTITIONS 3;
+INSERT INTO t1_will_crash VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10), (11);
+FLUSH TABLES;
+--echo # replacing t1#P#p1.MYI with a corrupt + unclosed one created by doing:
+--echo # 'create table t1 (a int key(a)) partition by hash (a) partitions 3'
+--echo # head -c1024 t1#P#p1.MYI > corrupt_t1#P#p1.MYI 
+--remove_file $MYSQLTEST_VARDIR/master-data/test/t1_will_crash#P#p1.MYI
+--copy_file std_data/corrupt_t1#P#p1.MYI $MYSQLTEST_VARDIR/master-data/test/t1_will_crash#P#p1.MYI
+SELECT * FROM t1_will_crash;
+DROP TABLE t1_will_crash;

sql/ha_partition.cc

@@ -1129,6 +1129,70 @@ int ha_partition::handle_opt_partitions(THD *thd, HA_CHECK_OPT *check_opt,
 #endif
 }
 
+
+/**
+  @brief Check and repair the table if neccesary
+
+  @param thd    Thread object
+
+  @retval TRUE  Error/Not supported
+  @retval FALSE Success
+*/
+
+bool ha_partition::check_and_repair(THD *thd)
+{
+  handler **file= m_file;
+  DBUG_ENTER("ha_partition::check_and_repair");
+
+  do
+  {
+    if ((*file)->ha_check_and_repair(thd))
+      DBUG_RETURN(TRUE);
+  } while (*(++file));
+  DBUG_RETURN(FALSE);
+}
+ 
+
+/**
+  @breif Check if the table can be automatically repaired
+
+  @retval TRUE  Can be auto repaired
+  @retval FALSE Cannot be auto repaired
+*/
+
+bool ha_partition::auto_repair() const
+{
+  DBUG_ENTER("ha_partition::auto_repair");
+
+  /*
+    As long as we only support one storage engine per table,
+    we can use the first partition for this function.
+  */
+  DBUG_RETURN(m_file[0]->auto_repair());
+}
+
+
+/**
+  @breif Check if the table is crashed
+
+  @retval TRUE  Crashed
+  @retval FALSE Not crashed
+*/
+
+bool ha_partition::is_crashed() const
+{
+  handler **file= m_file;
+  DBUG_ENTER("ha_partition::is_crashed");
+
+  do
+  {
+    if ((*file)->is_crashed())
+      DBUG_RETURN(TRUE);
+  } while (*(++file));
+  DBUG_RETURN(FALSE);
+}
+ 
+
 /*
   Prepare by creating a new partition
 

sql/ha_partition.h

@@ -935,6 +935,9 @@ class ha_partition :public handler
     virtual int analyze_partitions(THD *thd);
     virtual int check_partitions(THD *thd);
     virtual int repair_partitions(THD *thd);
+    virtual bool check_and_repair(THD *thd);
+    virtual bool auto_repair() const;
+    virtual bool is_crashed() const;
 
     private:
     int handle_opt_partitions(THD *thd, HA_CHECK_OPT *check_opt,
@@ -950,12 +953,9 @@ class ha_partition :public handler
     virtual int restore(THD* thd, HA_CHECK_OPT *check_opt);
     virtual int assign_to_keycache(THD* thd, HA_CHECK_OPT *check_opt);
     virtual int preload_keys(THD *thd, HA_CHECK_OPT *check_opt);
-    virtual bool check_and_repair(THD *thd);
     virtual int dump(THD* thd, int fd = -1);
     virtual int net_read_dump(NET* net);
     virtual uint checksum() const;
-    virtual bool is_crashed() const;
-    virtual bool auto_repair() const;
   */
 
   /*