Bug #27512 Inconsistent tuples when using variable size and >16Gb datamemory

- increase var part reference from 32 to 64 bits on 64 bit systems
- note current patch does not allow for online upgrade from 32 to 64 bit systems or vice versa

storage/ndb/src/kernel/blocks/dbtup/Dbtup.hpp

@@ -1206,9 +1206,35 @@ typedef Ptr<HostBuffer> HostBufferPtr;
    */
   struct Var_part_ref 
   {
+#if NDB_SIZEOF_CHARP == 4
     Uint32 m_ref;
-  };
+    STATIC_CONST( SZ32 = 1 );
 
+    void copyout(Local_key* dst) const {
+      dst->m_page_no = m_ref >> MAX_TUPLES_BITS;
+      dst->m_page_idx = m_ref & MAX_TUPLES_PER_PAGE;
+    }
+
+    void assign(const Local_key* src) {
+      m_ref = (src->m_page_no << MAX_TUPLES_BITS) | src->m_page_idx;
+    }
+#else
+    Uint32 m_page_no;
+    Uint32 m_page_idx;
+    STATIC_CONST( SZ32 = 2 );
+
+    void copyout(Local_key* dst) const {
+      dst->m_page_no = m_page_no;
+      dst->m_page_idx = m_page_idx;
+    }
+
+    void assign(const Local_key* src) {
+      m_page_no = src->m_page_no;
+      m_page_idx = src->m_page_idx;
+    }
+#endif    
+  };
+  
   struct Tuple_header
   {
     union {
@@ -2847,12 +2873,13 @@ Uint32*
 Dbtup::get_ptr(Ptr<Page>* pagePtr, Var_part_ref ref)
 {
   PagePtr tmp;
-  Uint32 page_idx= ref.m_ref & MAX_TUPLES_PER_PAGE;
-  tmp.i= ref.m_ref >> MAX_TUPLES_BITS;
+  Local_key key;
+  ref.copyout(&key);
+  tmp.i = key.m_page_no;
   
   c_page_pool.getPtr(tmp);
   memcpy(pagePtr, &tmp, sizeof(tmp));
-  return ((Var_page*)tmp.p)->get_ptr(page_idx);
+  return ((Var_page*)tmp.p)->get_ptr(key.m_page_idx);
 }
 
 inline

storage/ndb/src/kernel/blocks/dbtup/DbtupAbort.cpp

@@ -153,12 +153,14 @@ void Dbtup::do_tup_abortreq(Signal* signal, Uint32 flags)
 
 	ndbassert(tuple_ptr->m_header_bits & Tuple_header::CHAINED_ROW);
 	
-	Uint32 ref= * tuple_ptr->get_var_part_ptr(regTabPtr.p);
+	Var_part_ref *ref = 
+	  (Var_part_ref*)tuple_ptr->get_var_part_ptr(regTabPtr.p);
+
 	Local_key tmp; 
-	tmp.assref(ref); 
+	ref->copyout(&tmp);
 	
 	idx= tmp.m_page_idx;
-	var_part= get_ptr(&vpage, *(Var_part_ref*)&ref);
+	var_part= get_ptr(&vpage, *ref);
 	Var_page* pageP = (Var_page*)vpage.p;
 	Uint32 len= pageP->get_entry_len(idx) & ~Var_page::CHAIN;
 	Uint32 sz = ((((mm_vars + 1) << 1) + (((Uint16*)var_part)[mm_vars]) + 3)>> 2);

storage/ndb/src/kernel/blocks/dbtup/DbtupCommit.cpp

@@ -236,13 +236,14 @@ Dbtup::commit_operation(Signal* signal,
   }
   else
   {
-    Uint32 *ref= tuple_ptr->get_var_part_ptr(regTabPtr);
+    Var_part_ref *ref= (Var_part_ref*)tuple_ptr->get_var_part_ptr(regTabPtr);
     memcpy(tuple_ptr, copy, 4*(Tuple_header::HeaderSize+fixsize));
     
-    Local_key tmp; tmp.assref(*ref);
-    
+    Local_key tmp; 
+    ref->copyout(&tmp);
+
     PagePtr vpagePtr;
-    Uint32 *dst= get_ptr(&vpagePtr, *(Var_part_ref*)ref);
+    Uint32 *dst= get_ptr(&vpagePtr, *ref);
     Var_page* vpagePtrP = (Var_page*)vpagePtr.p;
     Uint32 *src= copy->get_var_part_ptr(regTabPtr);
     Uint32 sz= ((mm_vars + 1) << 1) + (((Uint16*)src)[mm_vars]);

storage/ndb/src/kernel/blocks/dbtup/DbtupExecQuery.cpp

@@ -2851,11 +2851,11 @@ Dbtup::handle_size_change_after_update(KeyReqStruct* req_struct,
     Ptr<Page> pagePtr = req_struct->m_varpart_page_ptr;
     Var_page* pageP= (Var_page*)pagePtr.p;
     Uint32 idx, alloc, needed;
-    Uint32 *refptr = org->get_var_part_ptr(regTabPtr);
+    Var_part_ref *refptr = (Var_part_ref*)org->get_var_part_ptr(regTabPtr);
     ndbassert(bits & Tuple_header::CHAINED_ROW);
 
     Local_key ref;
-    ref.assref(*refptr);
+    refptr->copyout(&ref);
     idx= ref.m_page_idx;
     if (! (copy_bits & Tuple_header::CHAINED_ROW))
     {
@@ -2878,7 +2878,7 @@ Dbtup::handle_size_change_after_update(KeyReqStruct* req_struct,
     }
     copy_bits |= Tuple_header::MM_GROWN;
     if (unlikely(realloc_var_part(regFragPtr, regTabPtr, pagePtr, 
-				  (Var_part_ref*)refptr, alloc, needed)))
+				  refptr, alloc, needed)))
       return -1;
   }
   req_struct->m_tuple_ptr->m_header_bits = copy_bits;
@@ -2945,9 +2945,10 @@ Dbtup::nr_read_pk(Uint32 fragPtrI,
   PagePtr page_ptr;
   if (tablePtr.p->m_attributes[MM].m_no_of_varsize)
   {
-    tablePtr.p->m_offsets[MM].m_fix_header_size += Tuple_header::HeaderSize+1;
+    const Uint32 XXX = Tuple_header::HeaderSize+Var_part_ref::SZ32;
+    tablePtr.p->m_offsets[MM].m_fix_header_size += XXX;
     ret = alloc_page(tablePtr.p, fragPtr.p, &page_ptr, tmp.m_page_no);
-    tablePtr.p->m_offsets[MM].m_fix_header_size -= Tuple_header::HeaderSize+1;
+    tablePtr.p->m_offsets[MM].m_fix_header_size -= XXX;
   } 
   else
   {

storage/ndb/src/kernel/blocks/dbtup/DbtupIndex.cpp

@@ -479,7 +479,7 @@ Dbtup::buildIndex(Signal* signal, Uint32 buildPtrI)
 
   const Uint32 firstTupleNo = 0;
   const Uint32 tupheadsize = tablePtr.p->m_offsets[MM].m_fix_header_size +
-    (buildPtr.p->m_build_vs ? Tuple_header::HeaderSize + 1: 0);
+    (buildPtr.p->m_build_vs? Tuple_header::HeaderSize + Var_part_ref::SZ32: 0);
 
 #ifdef TIME_MEASUREMENT
   MicroSecondTimer start;

storage/ndb/src/kernel/blocks/dbtup/DbtupMeta.cpp

@@ -542,7 +542,7 @@ void Dbtup::execTUP_ADD_ATTRREQ(Signal* signal)
   {
     Uint32 fix_tupheader = regTabPtr.p->m_offsets[MM].m_fix_header_size;
     if(regTabPtr.p->m_attributes[MM].m_no_of_varsize != 0)
-      fix_tupheader += Tuple_header::HeaderSize + 1;
+      fix_tupheader += Tuple_header::HeaderSize + Var_part_ref::SZ32;
     ndbassert(fix_tupheader > 0);
     Uint32 noRowsPerPage = ZWORDS_ON_PAGE / fix_tupheader;
     Uint32 noAllocatedPages =

storage/ndb/src/kernel/blocks/dbtup/DbtupScan.cpp

@@ -597,7 +597,7 @@ Dbtup::scanNext(Signal* signal, ScanOpPtr scanPtr)
   
   Uint32 lcp_list = fragPtr.p->m_lcp_keep_list;
   Uint32 size = table.m_offsets[mm].m_fix_header_size +
-    (bits & ScanOp::SCAN_VS ? Tuple_header::HeaderSize + 1: 0);
+    (bits&ScanOp::SCAN_VS ? Tuple_header::HeaderSize + Var_part_ref::SZ32 : 0);
 
   if (lcp && lcp_list != RNIL)
     goto found_lcp_keep;

storage/ndb/src/kernel/blocks/dbtup/DbtupVarAlloc.cpp

@@ -71,9 +71,10 @@ Uint32* Dbtup::alloc_var_rec(Fragrecord* fragPtr,
   /**
    * TODO alloc fix+var part
    */
-  tabPtr->m_offsets[MM].m_fix_header_size += Tuple_header::HeaderSize + 1;
+  const Uint32 XXX = Tuple_header::HeaderSize + Var_part_ref::SZ32;
+  tabPtr->m_offsets[MM].m_fix_header_size += XXX;
   Uint32 *ptr = alloc_fix_rec(fragPtr, tabPtr, key, out_frag_page_id);
-  tabPtr->m_offsets[MM].m_fix_header_size -= Tuple_header::HeaderSize + 1;
+  tabPtr->m_offsets[MM].m_fix_header_size -= XXX;
   if (unlikely(ptr == 0))
   {
     return 0;
@@ -90,7 +91,8 @@ Uint32* Dbtup::alloc_var_rec(Fragrecord* fragPtr,
   if (likely(alloc_var_part(fragPtr, tabPtr, alloc_size, &varref) != 0))
   {
     Tuple_header* tuple = (Tuple_header*)ptr;
-    * tuple->get_var_part_ptr(tabPtr) = varref.ref();
+    Var_part_ref* dst = (Var_part_ref*)tuple->get_var_part_ptr(tabPtr);
+    dst->assign(&varref);
     return ptr;
   }
   
@@ -168,7 +170,8 @@ void Dbtup::free_var_rec(Fragrecord* fragPtr,
   Tuple_header* tuple = (Tuple_header*)ptr;
 
   Local_key ref;
-  ref.assref(* tuple->get_var_part_ptr(tabPtr));
+  Var_part_ref * varref = (Var_part_ref*)tuple->get_var_part_ptr(tabPtr);
+  varref->copyout(&ref);
 
   free_fix_rec(fragPtr, tabPtr, key, (Fix_page*)pagePtr.p);
 
@@ -194,12 +197,12 @@ void Dbtup::free_var_rec(Fragrecord* fragPtr,
 
 int
 Dbtup::realloc_var_part(Fragrecord* fragPtr, Tablerec* tabPtr, PagePtr pagePtr,
-			Var_part_ref* ref, Uint32 oldsz, Uint32 newsz)
+			Var_part_ref* refptr, Uint32 oldsz, Uint32 newsz)
 {
   Uint32 add = newsz - oldsz;
   Var_page* pageP = (Var_page*)pagePtr.p;
   Local_key oldref;
-  oldref.assref(*(Uint32*)ref);
+  refptr->copyout(&oldref);
   
   if (pageP->free_space >= add)
   {
@@ -238,7 +241,7 @@ Dbtup::realloc_var_part(Fragrecord* fragPtr, Tablerec* tabPtr, PagePtr pagePtr,
     ndbassert(oldref.m_page_no != newref.m_page_no);
     ndbassert(pageP->get_entry_len(oldref.m_page_idx) == oldsz);
     memcpy(dst, src, 4*oldsz);
-    * ((Uint32*)ref) = newref.ref();
+    refptr->assign(&newref);
     
     pageP->free_record(oldref.m_page_idx, Var_page::CHAIN);
     update_free_page_list(fragPtr, pagePtr);    
@@ -399,9 +402,10 @@ Dbtup::alloc_var_rowid(Fragrecord* fragPtr,
 		       Local_key* key,
 		       Uint32 * out_frag_page_id)
 {
-  tabPtr->m_offsets[MM].m_fix_header_size += Tuple_header::HeaderSize + 1;
+  const Uint32 XXX = Tuple_header::HeaderSize + Var_part_ref::SZ32;
+  tabPtr->m_offsets[MM].m_fix_header_size += XXX;
   Uint32 *ptr = alloc_fix_rowid(fragPtr, tabPtr, key, out_frag_page_id);
-  tabPtr->m_offsets[MM].m_fix_header_size -= Tuple_header::HeaderSize + 1;
+  tabPtr->m_offsets[MM].m_fix_header_size -= XXX;
   if (unlikely(ptr == 0))
   {
     return 0;
@@ -417,7 +421,8 @@ Dbtup::alloc_var_rowid(Fragrecord* fragPtr,
   if (likely(alloc_var_part(fragPtr, tabPtr, alloc_size, &varref) != 0))
   {
     Tuple_header* tuple = (Tuple_header*)ptr;
-    * tuple->get_var_part_ptr(tabPtr) = varref.ref();
+    Var_part_ref* dst = (Var_part_ref*)tuple->get_var_part_ptr(tabPtr);
+    dst->assign(&varref);
     return ptr;
   }