MDEV-14123: .rocksdb folder may break workflow which re-create data directory

Part #2: Adjust other parts of testsuite to take into account
that RocksDB files are in "#rocksdb" now.

storage/rocksdb/mysql-test/rocksdb/r/rocksdb.result

@@ -898,7 +898,7 @@ rocksdb_concurrent_prepare	ON
 rocksdb_create_checkpoint	
 rocksdb_create_if_missing	ON
 rocksdb_create_missing_column_families	OFF
-rocksdb_datadir	./.rocksdb
+rocksdb_datadir	./#rocksdb
 rocksdb_db_write_buffer_size	0
 rocksdb_deadlock_detect	OFF
 rocksdb_deadlock_detect_depth	50

storage/rocksdb/mysql-test/rocksdb/t/bulk_load.inc

@@ -134,7 +134,7 @@ select count(b) from t3;
 # the server starts
 --let $tmpext = .bulk_load.tmp
 --let $MYSQLD_DATADIR= `SELECT @@datadir`
---let $datadir = $MYSQLD_DATADIR/.rocksdb
+--let $datadir = $MYSQLD_DATADIR/#rocksdb
 --write_file $datadir/test$tmpext
 dummy data
 EOF

storage/rocksdb/mysql-test/rocksdb/t/compact_deletes_test.inc

@@ -44,7 +44,7 @@ perl;
   print "wait_for_delete: $ENV{no_more_deletes}\n";
   while ($retry++ < $num_retries) {
     $total_d=$total_e=0;
-    for $f (<$ENV{MYSQLTEST_VARDIR}/mysqld.1/data/.rocksdb/*.sst>) {
+    for $f (<$ENV{MYSQLTEST_VARDIR}/mysqld.1/data/#rocksdb/*.sst>) {
       # excluding system cf
       $filename= "$ENV{MARIAROCKS_SST_DUMP} --command=scan --output_hex --file=$f";
       open(D, '-|', $filename) || die("Can't open file $filename: $!");

storage/rocksdb/mysql-test/rocksdb/t/drop_table2.test

@@ -97,7 +97,7 @@ set @@global.rocksdb_compact_cf = 'rev:cf2';
 set @@global.rocksdb_compact_cf = 'default';
 
 perl;
-$size+=-s $_ for (<$ENV{MYSQLTEST_VARDIR}/mysqld.1/data/.rocksdb/*.sst>);
+$size+=-s $_ for (<$ENV{MYSQLTEST_VARDIR}/mysqld.1/data/\#rocksdb/*.sst>);
 $filename= "$ENV{MYSQLTEST_VARDIR}/tmp/size_output";
 open(F, '>', $filename) || die("Can't open file $filename: $!");
 print F $size;
@@ -121,7 +121,7 @@ let $wait_condition = select count(*) = 0
 
 # Check that space is reclaimed
 perl;
-$size+=-s $_ for (<$ENV{MYSQLTEST_VARDIR}/mysqld.1/data/.rocksdb/*.sst>);
+$size+=-s $_ for (<$ENV{MYSQLTEST_VARDIR}/mysqld.1/data/\#rocksdb/*.sst>);
 $filename= "$ENV{MYSQLTEST_VARDIR}/tmp/size_output";
 open(F, '<', $filename) || die("Can't open file $filename: $!");
 $old=<F>;

storage/rocksdb/mysql-test/rocksdb/t/optimize_table.inc

@@ -1,7 +1,7 @@
 # run a check script to verify sst files reduced enough during each optimize table
 perl;
 
-$size += -s $_ for (<$ENV{datadir}/.rocksdb/*.sst>);
+$size += -s $_ for (<$ENV{datadir}/#rocksdb/*.sst>);
 $file= "$ENV{MYSQL_TMP_DIR}/sst_size.dat";
 
 if (-f $file) {

storage/rocksdb/mysql-test/rocksdb_hotbackup/include/stream_run.sh

@@ -77,7 +77,7 @@ MOVEBACK_LOG="${MYSQL_TMP_DIR}/myrocks_hotbackup_moveback_log"
 
 echo "myrocks_hotbackup move-back phase"
 $MYSQL_MYROCKS_HOTBACKUP --move_back --datadir=$dest_data_dir \
-  --rocksdb_datadir=$dest_data_dir/.rocksdb \
-  --rocksdb_waldir=$dest_data_dir/.rocksdb \
+  --rocksdb_datadir=$dest_data_dir/\#rocksdb \
+  --rocksdb_waldir=$dest_data_dir/\#rocksdb \
   --backup_dir=$backup_dir > $MOVEBACK_LOG 2>&1
 

storage/rocksdb/mysql-test/rocksdb_rpl/t/rpl_gtid_crash_safe_wal_corrupt.inc

@@ -40,7 +40,7 @@ select * from mysql.slave_gtid_info;
 --write_file $MYSQL_TMP_DIR/truncate_tail_wal.sh
 #!/bin/bash
 
-F=`ls -t $slave_data_dir/.rocksdb/*.log | head -n 1`
+F=`ls -t $slave_data_dir/\#rocksdb/*.log | head -n 1`
 SIZE=`stat -c %s $F`
 NEW_SIZE=`expr $SIZE - 10`
 truncate -s $NEW_SIZE $F
@@ -116,7 +116,7 @@ connection slave;
 #!/bin/bash
 
 # expected to be around 950 bytes
-F=`ls -t $slave_data_dir/.rocksdb/*.log | head -n 1`
+F=`ls -t $slave_data_dir/\#rocksdb/*.log | head -n 1`
 SIZE=`stat -c %s $F`
 OFFSET=$(( $SIZE-500 ))
 dd bs=1 if=/dev/zero of=$F count=100 seek=$OFFSET conv=notrunc

storage/rocksdb/mysql-test/rocksdb_sys_vars/r/rocksdb_datadir_basic.result

@@ -1,7 +1,7 @@
 SET @start_global_value = @@global.ROCKSDB_DATADIR;
 SELECT @start_global_value;
 @start_global_value
-./.rocksdb
+./#rocksdb
 "Trying to set variable @@global.ROCKSDB_DATADIR to 444. It should fail because it is readonly."
 SET @@global.ROCKSDB_DATADIR   = 444;
 ERROR HY000: Variable 'rocksdb_datadir' is a read only variable

storage/rocksdb/mysql-test/storage_engine/cleanup_engine.inc

@@ -12,14 +12,14 @@
 --let $datadir= `SELECT @@datadir`
 
 --error 0,1
---file_exists $datadir/.rocksdb/*
+--file_exists $datadir/\#rocksdb/*
 if (!$mysql_errno)
 {
   --enable_reconnect
   --exec echo "wait" > $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
   --shutdown_server
   --source include/wait_until_disconnected.inc
-  --rmdir $datadir/.rocksdb
+  --rmdir $datadir/\#rocksdb
   --exec echo "restart" > $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
   --source include/wait_until_connected_again.inc
 }