Bug#24521, ndbd node crashes if try to create many datafiles for tablespace

storage/ndb/src/kernel/blocks/ndbfs/Ndbfs.cpp:
  change MaxNoOfOpenFiles's default value to 0, that means no max openning files limitation 
  in ndbfs when user doesnot set explicitly the value in config.ini;
  Meanwhile, if user set a specific value of MaxNoOfOpenFile and hit the max limiation, he 
  deserves the result.
storage/ndb/src/mgmsrv/ConfigInfo.cpp:
  change default to 0
storage/ndb/src/mgmsrv/ParamInfo.cpp:
  change default to 0

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

@@ -105,11 +105,11 @@ Ndbfs::execREAD_CONFIG_REQ(Signal* signal)
 
   theRequestPool = new Pool<Request>;
 
-  m_maxFiles = 40;
+  m_maxFiles = 0;
   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, &noIdleFiles);
-  if (noIdleFiles > m_maxFiles)
+  if (noIdleFiles > m_maxFiles && m_maxFiles != 0)
     m_maxFiles = noIdleFiles;
   // Create idle AsyncFiles
   for (Uint32 i = 0; i < noIdleFiles; i++){
@@ -650,7 +650,7 @@ AsyncFile*
 Ndbfs::createAsyncFile(){
 
   // Check limit of open files
-  if (theFiles.size()+1 ==  m_maxFiles) {
+  if (m_maxFiles !=0 && theFiles.size()+1 ==  m_maxFiles) {
     // Print info about all open files
     for (unsigned i = 0; i < theFiles.size(); i++){
       AsyncFile* file = theFiles[i];

storage/ndb/src/mgmsrv/ConfigInfo.cpp

@@ -879,7 +879,7 @@ const ConfigInfo::ParamInfo ConfigInfo::m_ParamInfo[] = {
     ConfigInfo::CI_USED,
     false,
     ConfigInfo::CI_INT,
-    "40",
+    "0",
     "20",
     STR_VALUE(MAX_INT_RNIL) },
   

storage/ndb/src/mgmsrv/ParamInfo.cpp

@@ -705,7 +705,7 @@ const ParamInfo ParamInfoArray[] = {
     CI_USED,
     false,
     CI_INT,
-    "40",
+    "0",
     "20",
     STR_VALUE(MAX_INT_RNIL) },