ndb - bug#23499 and bug#23502

  Fix some too small buffers in backup
  


ndb/include/kernel/ndb_limits.h:
  backport for 5.1
  add MAX_WORDS_META_FILE for computing Backup::NO_OF_PAGES_META_FILE
ndb/src/kernel/blocks/backup/Backup.cpp:
  Make sure to set maxInsert so that we actually can handle NO_OF_META_PAGES
ndb/src/kernel/blocks/backup/Backup.hpp:
  backport for 5.1
  add MAX_WORDS_META_FILE for computing Backup::NO_OF_PAGES_META_FILE

ndb/include/kernel/ndb_limits.h

@@ -62,6 +62,8 @@
 #define MAX_KEY_SIZE_IN_WORDS 1023
 #define MAX_FRM_DATA_SIZE 6000
 
+#define MAX_WORDS_META_FILE 24576
+
 #define MIN_ATTRBUF ((MAX_ATTRIBUTES_IN_TABLE/24) + 1)
 /*
  * Max Number of Records to fetch per SCAN_NEXTREQ in a scan in LQH. The

ndb/src/kernel/blocks/backup/Backup.cpp

@@ -2323,9 +2323,8 @@ Backup::execDEFINE_BACKUP_REQ(Signal* signal)
     0    // 3M
   };
   const Uint32 maxInsert[] = {
-    2048,  // Temporarily to solve TR515
-    //25,      // 100 bytes
-    4096,    // 4k
+    MAX_WORDS_META_FILE,
+    4096,    // 16k
     16*3000, // Max 16 tuples
   };
   Uint32 minWrite[] = {

ndb/src/kernel/blocks/backup/Backup.hpp

@@ -513,8 +513,10 @@ public:
   Config c_defaults;
   Uint32 m_diskless;
 
-  STATIC_CONST(NO_OF_PAGES_META_FILE = 2);
-
+  STATIC_CONST(NO_OF_PAGES_META_FILE = 
+	       (MAX_WORDS_META_FILE + BACKUP_WORDS_PER_PAGE - 1) / 
+	       BACKUP_WORDS_PER_PAGE);
+  
   /**
    * Pools
    */