ndb - bug#16693 (4.1) test + workaround, analyze later

ndb/test/ndbapi/testBlobs.cpp:
  do batched deletes + list commit across open cursor test cases
ndb/tools/delete_all.cpp:
  if blobs, no commit across open cursor (single trans)
  cases listed in testBlobs.cpp, analyze later (in 5.0 maybe)

ndb/test/ndbapi/testBlobs.cpp

@@ -841,9 +841,6 @@ insertPk(int style)
       CHK(g_con->execute(NoCommit) == 0);
       CHK(writeBlobData(tup) == 0);
     }
-    // just another trap
-    if (urandom(10) == 0)
-      CHK(g_con->execute(NoCommit) == 0);
     if (++n == g_opt.m_batch) {
       CHK(g_con->execute(Commit) == 0);
       g_ndb->closeTransaction(g_con);
@@ -965,21 +962,31 @@ static int
 deletePk()
 {
   DBG("--- deletePk ---");
+  unsigned n = 0;
+  CHK((g_con = g_ndb->startTransaction()) != 0);
   for (unsigned k = 0; k < g_opt.m_rows; k++) {
     Tup& tup = g_tups[k];
     DBG("deletePk pk1=" << hex << tup.m_pk1);
-    CHK((g_con = g_ndb->startTransaction()) != 0);
     CHK((g_opr = g_con->getNdbOperation(g_opt.m_tname)) != 0);
     CHK(g_opr->deleteTuple() == 0);
     CHK(g_opr->equal("PK1", tup.m_pk1) == 0);
     if (g_opt.m_pk2len != 0)
       CHK(g_opr->equal("PK2", tup.m_pk2) == 0);
+    if (++n == g_opt.m_batch) {
       CHK(g_con->execute(Commit) == 0);
       g_ndb->closeTransaction(g_con);
+      CHK((g_con = g_ndb->startTransaction()) != 0);
+      n = 0;
+    }
     g_opr = 0;
-    g_con = 0;
     tup.m_exists = false;
   }
+  if (n != 0) {
+    CHK(g_con->execute(Commit) == 0);
+    n = 0;
+  }
+  g_ndb->closeTransaction(g_con);
+  g_con = 0;
   return 0;
 }
 
@@ -1082,19 +1089,27 @@ static int
 deleteIdx()
 {
   DBG("--- deleteIdx ---");
+  unsigned n = 0;
+  CHK((g_con = g_ndb->startTransaction()) != 0);
   for (unsigned k = 0; k < g_opt.m_rows; k++) {
     Tup& tup = g_tups[k];
     DBG("deleteIdx pk1=" << hex << tup.m_pk1);
-    CHK((g_con = g_ndb->startTransaction()) != 0);
     CHK((g_opx = g_con->getNdbIndexOperation(g_opt.m_x1name, g_opt.m_tname)) != 0);
     CHK(g_opx->deleteTuple() == 0);
     CHK(g_opx->equal("PK2", tup.m_pk2) == 0);
+    if (++n == g_opt.m_batch) {
       CHK(g_con->execute(Commit) == 0);
       g_ndb->closeTransaction(g_con);
+      CHK((g_con = g_ndb->startTransaction()) != 0);
+      n = 0;
+    }
     g_opx = 0;
-    g_con = 0;
     tup.m_exists = false;
   }
+  if (n != 0) {
+    CHK(g_con->execute(Commit) == 0);
+    n = 0;
+  }
   return 0;
 }
 
@@ -1225,20 +1240,49 @@ deleteScan(bool idx)
     CHK(g_ops->getValue("PK2", tup.m_pk2) != 0);
   CHK(g_con->execute(NoCommit) == 0);
   unsigned rows = 0;
+  unsigned n = 0;
   while (1) {
     int ret;
     tup.m_pk1 = (Uint32)-1;
     memset(tup.m_pk2, 'x', g_opt.m_pk2len);
-    CHK((ret = rs->nextResult()) == 0 || ret == 1);
+    CHK((ret = rs->nextResult(true)) == 0 || ret == 1);
     if (ret == 1)
       break;
+    while (1) {
       DBG("deleteScan" << (idx ? "Idx" : "") << " pk1=" << hex << tup.m_pk1);
-    CHK(rs->deleteTuple() == 0);
-    CHK(g_con->execute(NoCommit) == 0);
       Uint32 k = tup.m_pk1 - g_opt.m_pk1off;
       CHK(k < g_opt.m_rows && g_tups[k].m_exists);
       g_tups[k].m_exists = false;
+      CHK(rs->deleteTuple() == 0);
       rows++;
+      tup.m_pk1 = (Uint32)-1;
+      memset(tup.m_pk2, 'x', g_opt.m_pk2len);
+      CHK((ret = rs->nextResult(false)) == 0 || ret == 1 || ret == 2);
+      if (++n == g_opt.m_batch || ret == 2) {
+        DBG("execute batch: n=" << n << " ret=" << ret);
+        switch (0) {
+        case 0: // works normally
+          CHK(g_con->execute(NoCommit) == 0);
+          CHK(true || g_con->restart() == 0);
+          break;
+        case 1: // nonsense - g_con is invalid for 2nd batch
+          CHK(g_con->execute(Commit) == 0);
+          CHK(true || g_con->restart() == 0);
+          break;
+        case 2: // DBTC sendSignalErrorRefuseLab
+          CHK(g_con->execute(NoCommit) == 0);
+          CHK(g_con->restart() == 0);
+          break;
+        case 3: // 266 time-out
+          CHK(g_con->execute(Commit) == 0);
+          CHK(g_con->restart() == 0);
+          break;
+        }
+        n = 0;
+      }
+      if (ret == 2)
+        break;
+    }
   }
   CHK(g_con->execute(Commit) == 0);
   g_ndb->closeTransaction(g_con);

ndb/tools/delete_all.cpp

@@ -22,7 +22,8 @@
 #include <NdbSleep.h>
 #include <NDBT.hpp>
 
-static int clear_table(Ndb* pNdb, const NdbDictionary::Table* pTab, int parallelism=240);
+static int clear_table(Ndb* pNdb, const NdbDictionary::Table* pTab,
+                       bool commit_across_open_cursor, int parallelism=240);
 
 NDB_STD_OPTS_VARS;
 
@@ -81,8 +82,18 @@ int main(int argc, char** argv){
       ndbout << " Table " << argv[i] << " does not exist!" << endl;
       return NDBT_ProgramExit(NDBT_WRONGARGS);
     }
+    // Check if we have any blobs
+    bool commit_across_open_cursor = true;
+    for (int j = 0; j < pTab->getNoOfColumns(); j++) {
+      NdbDictionary::Column::Type t = pTab->getColumn(j)->getType();
+      if (t == NdbDictionary::Column::Blob ||
+          t == NdbDictionary::Column::Text) {
+        commit_across_open_cursor = false;
+        break;
+      }
+    }
     ndbout << "Deleting all from " << argv[i] << "...";
-    if(clear_table(&MyNdb, pTab) == NDBT_FAILED){
+    if(clear_table(&MyNdb, pTab, commit_across_open_cursor) == NDBT_FAILED){
       res = NDBT_FAILED;
       ndbout << "FAILED" << endl;
     }
@@ -91,7 +102,8 @@ int main(int argc, char** argv){
 }
 
 
-int clear_table(Ndb* pNdb, const NdbDictionary::Table* pTab, int parallelism)
+int clear_table(Ndb* pNdb, const NdbDictionary::Table* pTab,
+                bool commit_across_open_cursor, int parallelism)
 {
   // Scan all records exclusive and delete 
   // them one by one
@@ -153,8 +165,12 @@ int clear_table(Ndb* pNdb, const NdbDictionary::Table* pTab, int parallelism)
       } while((check = rs->nextResult(false)) == 0);
       
       if(check != -1){
+        if (commit_across_open_cursor) {
           check = pTrans->execute(Commit);   
-	pTrans->restart();
+          pTrans->restart(); // new tx id
+        } else {
+          check = pTrans->execute(NoCommit);
+        }
       }
       
       err = pTrans->getNdbError();    
@@ -180,6 +196,10 @@ int clear_table(Ndb* pNdb, const NdbDictionary::Table* pTab, int parallelism)
       }
       goto failed;
     }
+    if (! commit_across_open_cursor && pTrans->execute(Commit) != 0) {
+      err = pTrans->getNdbError();
+      goto failed;
+    }
     pNdb->closeTransaction(pTrans);
     return NDBT_OK;
   }