added config parameter InitialNoOfOpenFiles

mysql-test/ndb/ndb_config_2_node.ini

@@ -12,6 +12,9 @@ MaxNoOfAttributes= CHOOSE_MaxNoOfAttributes
 TimeBetweenGlobalCheckpoints= 500
 NoOfFragmentLogFiles= 3
 DiskPageBufferMemory= CHOOSE_DiskPageBufferMemory
+# the following parametes just function as a small regression
+# test that the parameter exists
+InitialNoOfOpenFiles= 27
 
 [ndbd]
 HostName= CHOOSE_HOSTNAME_1   # hostname is a valid network adress

storage/ndb/src/kernel/blocks/ndbfs/Ndbfs.cpp

@@ -108,9 +108,11 @@ Ndbfs::execREAD_CONFIG_REQ(Signal* signal)
 
   m_maxFiles = 40;
   ndb_mgm_get_int_parameter(p, CFG_DB_MAX_OPEN_FILES, &m_maxFiles);
-	        
+  Uint32 noIdleFiles = 27;
+  ndb_mgm_get_int_parameter(p, CFG_DB_INITIAL_OPEN_FILES, &m_maxFiles);
+  if (noIdleFiles > m_maxFiles)
+    m_maxFiles = noIdleFiles;
   // Create idle AsyncFiles
-  Uint32 noIdleFiles = m_maxFiles > 27  ? 27 : m_maxFiles ;
   for (Uint32 i = 0; i < noIdleFiles; i++){
     theIdleFiles.push_back(createAsyncFile());
   }

storage/ndb/src/mgmsrv/ConfigInfo.cpp

@@ -892,6 +892,18 @@ const ConfigInfo::ParamInfo ConfigInfo::m_ParamInfo[] = {
     "20",
     STR_VALUE(MAX_INT_RNIL) },
   
+  {
+    CFG_DB_MAX_OPEN_FILES,
+    "InitialNoOfOpenFiles",
+    DB_TOKEN,
+    "Initial number of files open per "DB_TOKEN_PRINT" node.(One thread is created per file)",
+    ConfigInfo::CI_USED,
+    false,
+    ConfigInfo::CI_INT,
+    "27",
+    "20",
+    STR_VALUE(MAX_INT_RNIL) },
+  
   {
     CFG_DB_TRANSACTION_CHECK_INTERVAL,
     "TimeBetweenInactiveTransactionAbortCheck",