Fixed core dump bug when hot link list in key cache was empty. Bug #10167

mysql-test/r/drop.result:
  Fixed result

1 files changed, 212 insertions, 0 deletions

diff --git a/tests/index_corrupt.pl b/tests/index_corrupt.pl
new file mode 100755
index 00000000000..19bf54f5d11
--- /dev/null
+++ b/tests/index_corrupt.pl
@@ -0,0 +1,212 @@
+#!/usr/bin/perl -w
+#
+# This is a test for a key cache bug (bug #10167)
+# To expose the bug mysqld should be started with --key-buffer-size=64K
+#
+
+$opt_loop_count=100000; # Change this to make test harder/easier
+
+##################### Standard benchmark inits ##############################
+
+use DBI;
+use Getopt::Long;
+use Benchmark;
+
+package main;
+
+$opt_skip_create=$opt_skip_in=$opt_verbose=$opt_fast_insert=
+  $opt_lock_tables=$opt_debug=$opt_skip_delete=$opt_fast=$opt_force=0;
+$opt_host=$opt_user=$opt_password=""; $opt_db="test";
+
+GetOptions("host=s","db=s","loop-count=i","skip-create","skip-in",
+	   "skip-delete","verbose","fast-insert","lock-tables","debug","fast",
+	   "force","user=s","password=s") || die "Aborted";
+$opt_verbose=$opt_debug=$opt_lock_tables=$opt_fast_insert=$opt_fast=$opt_skip_in=$opt_force=undef;  # Ignore warnings from these
+
+$firsttable  = "bench_f1";
+$secondtable = "bench_f2";
+$kill_file= "/tmp/mysqltest_index_corrupt.$$";
+
+####
+####  Start timeing and start test
+####
+
+$start_time=new Benchmark;
+if (!$opt_skip_create)
+{
+  $dbh = DBI->connect("DBI:mysql:$opt_db:$opt_host",
+		      $opt_user, $opt_password,
+		    { PrintError => 0}) || die $DBI::errstr;
+  $dbh->do("drop table if exists $firsttable, $secondtable");
+
+  print "Creating tables in $opt_db\n";
+  $dbh->do("create table $firsttable (
+c_pollid    INTEGER  NOT NULL,
+c_time      BIGINT   NOT NULL,
+c_data      DOUBLE   NOT NULL,
+c_error     INTEGER  NOT NULL,
+c_warning   INTEGER  NOT NULL,
+c_okay      INTEGER  NOT NULL,
+c_unknown   INTEGER  NOT NULL,
+c_rolled_up BIT      NOT NULL,
+INDEX t_mgmt_hist_r_i1 (c_pollid),
+INDEX t_mgmt_hist_r_i2 (c_time),
+INDEX t_mgmt_hist_r_i3 (c_rolled_up))") or die $DBI::errstr;
+
+  $dbh->do("create table $secondtable (
+c_pollid  INTEGER  NOT NULL,
+c_min_time  BIGINT   NOT NULL,
+c_max_time  BIGINT   NOT NULL,
+c_min_data  DOUBLE   NOT NULL,
+c_max_data  DOUBLE   NOT NULL,
+c_avg_data  DOUBLE   NOT NULL,
+c_error     INTEGER  NOT NULL,
+c_warning   INTEGER  NOT NULL,
+c_okay      INTEGER  NOT NULL,
+c_unknown   INTEGER  NOT NULL,
+c_rolled_up BIT      NOT NULL,
+INDEX t_mgmt_hist_d_i1 (c_pollid),
+INDEX t_mgmt_hist_d_i2 (c_min_time),
+INDEX t_mgmt_hist_d_i3 (c_max_time),
+INDEX t_mgmt_hist_d_i4 (c_rolled_up))") or die $DBI::errstr;
+
+
+  $dbh->disconnect; $dbh=0;	# Close handler
+}
+$|= 1;				# Autoflush
+
+####
+#### Start the tests
+####
+
+print "Running tests\n";
+insert_in_bench() if (($pid=fork()) == 0); $work{$pid}="insert";
+select_from_bench() if (($pid=fork()) == 0); $work{$pid}="insert-select;
+delete_from_bench() if (($pid=fork()) == 0); $work{$pid}="delete";
+
+$errors=0;
+while (($pid=wait()) != -1)
+{
+  $ret=$?/256;
+  print "thread '" . $work{$pid} . "' finished with exit code $ret\n";
+  $errors++ if ($ret != 0);
+}
+
+if (!$opt_skip_delete && !$errors)
+{
+  $dbh = DBI->connect("DBI:mysql:$opt_db:$opt_host",
+		      $opt_user, $opt_password,
+		    { PrintError => 0}) || die $DBI::errstr;
+  $dbh->do("drop table $firsttable, $secondtable");
+}
+print ($errors ? "Test failed\n" :"Test ok\n");
+
+$end_time=new Benchmark;
+print "Total time: " .
+  timestr(timediff($end_time, $start_time),"noc") . "\n";
+
+unlink $kill_file;
+
+exit(0);
+
+#
+# Insert records in the two tables
+#
+
+sub insert_in_bench
+{
+  my ($dbh,$rows,$found,$i);
+
+  $dbh = DBI->connect("DBI:mysql:$opt_db:$opt_host",
+		      $opt_user, $opt_password,
+		    { PrintError => 0}) || die $DBI::errstr;
+  for ($rows= 1; $rows <= $opt_loop_count ; $rows++)
+  {
+    $c_pollid = sprintf("%d",rand 1000);
+    $c_time = sprintf("%d",rand 100000);
+    $c_data = rand 1000000;
+    $test = rand 1;
+    $c_error=0;
+    $c_warning=0;
+    $c_okay=0;
+    $c_unknown=0;
+    if ($test < .8) {
+      $c_okay=1;
+    } elsif ($test <.9) {
+      $c_error=1;
+    } elsif ($test <.95) {
+      $c_warning=1;
+    } else {
+      $c_unknown=1;
+    }
+    $statement = "INSERT INTO $firsttable (c_pollid, c_time, c_data, c_error
+, c_warning, c_okay, c_unknown, c_rolled_up) ".
+  "VALUES ($c_pollid,$c_time,$c_data,$c_error,$c_warning,$c_okay,$c_unknown,0)";
+    $cursor = $dbh->prepare($statement);
+    $cursor->execute();
+    $cursor->finish();
+  }
+
+  $dbh->disconnect; $dbh=0;
+  print "insert_in_bench: Inserted $rows rows\n";
+
+  # Kill other threads
+  open(KILLFILE, "> $kill_file");
+  close(KILLFILE);
+
+  exit(0);
+}
+
+
+sub select_from_bench
+{
+  my ($dbh,$rows,$cursor);
+
+  $dbh = DBI->connect("DBI:mysql:$opt_db:$opt_host",
+		      $opt_user, $opt_password,
+		    { PrintError => 0}) || die $DBI::errstr;
+  for ($rows= 1; $rows < $opt_loop_count ; $rows++)
+  {
+    $t_value = rand 100000;
+    $t_value2 = $t_value+10000;
+    $statement = "INSERT INTO $secondtable (c_pollid, c_min_time, c_max_time
+, c_min_data, c_max_data, c_avg_data, c_error, c_warning, c_okay, c_unknown, c_rolled_up) SELECT c_pollid, MIN(c_time), MAX(c_time), MIN(c_data), MAX(c_data), AVG(c_data), SUM(c_error), SUM(c_warning), SUM(c_okay), SUM(c_unknown), 0 FROM $firsttable WHERE (c_time>=$t_value) AND (c_time<$t_value2) AND (c_rolled_up=0) GROUP BY c_pollid";
+    $cursor = $dbh->prepare($statement);
+    $cursor->execute();
+    $cursor->finish();
+    sleep 1;
+    if (-e $kill_file)
+    {
+      last;
+    }
+  }
+  print "select_from_bench: insert-select executed $rows times\n";
+  exit(0);
+}
+
+
+sub delete_from_bench
+{
+  my ($dbh,$row, $t_value, $t2_value, $statement, $cursor);
+
+  $dbh = DBI->connect("DBI:mysql:$opt_db:$opt_host",
+		      $opt_user, $opt_password,
+		    { PrintError => 0}) || die $DBI::errstr;
+
+  for ($rows= 1; $rows < $opt_loop_count ; $rows++)
+  {
+    $t_value = rand 50000;
+    $t2_value = $t_value + 50001;
+    $statement = "DELETE FROM $firsttable WHERE (c_time>$t_value) AND (c_time<$t2_value)";
+    $cursor = $dbh->prepare($statement);
+    $cursor->execute();
+    $cursor->finish();
+    sleep 10;
+    if (-e $kill_file)
+    {
+      last;
+    }
+  }
+  print "delete: delete executed $rows times\n";
+  exit(0);
+}