int main(int argc, const char** argv){ ndb_init(); int _help = 0; int _p = 0; const char * db = "TEST_DB"; const char* _connectstr = NULL; struct getargs args[] = { { "database", 'd', arg_string, &db, "database", 0 }, { "connstr", 'c', arg_string, &_connectstr, "Connect string", "cs" }, { "partitions", 'p', arg_integer, &_p, "New no of partitions", 0}, { "usage", '?', arg_flag, &_help, "Print help", "" } }; int num_args = sizeof(args) / sizeof(args[0]); int optind = 0; char desc[] = "tabname\n" \ "This program will alter no of partitions of table in Ndb.\n"; if(getarg(args, num_args, argc, argv, &optind) || _help){ arg_printusage(args, num_args, argv[0], desc); return NDBT_ProgramExit(NDBT_WRONGARGS); } if(argv[optind] == NULL) { arg_printusage(args, num_args, argv[0], desc); return NDBT_ProgramExit(NDBT_WRONGARGS); } // Connect to Ndb Ndb_cluster_connection con(_connectstr); if(con.connect(12, 5, 1) != 0) { return NDBT_ProgramExit(NDBT_FAILED); } Ndb MyNdb(&con, db ); if(MyNdb.init() != 0){ ERR(MyNdb.getNdbError()); return NDBT_ProgramExit(NDBT_FAILED); } while(MyNdb.waitUntilReady() != 0) ndbout << "Waiting for ndb to become ready..." << endl; NdbDictionary::Dictionary* MyDic = MyNdb.getDictionary(); for (int i = optind; i<argc; i++) { printf("altering %s/%s...", db, argv[i]); const NdbDictionary::Table* oldTable = MyDic->getTable(argv[i]); if (oldTable == 0) { ndbout << "Failed to retrieve table " << argv[i] << ": " << MyDic->getNdbError() << endl; return NDBT_ProgramExit(NDBT_FAILED); } NdbDictionary::Table newTable = *oldTable; newTable.setFragmentCount(_p); if (MyDic->beginSchemaTrans() != 0) goto err; if (MyDic->prepareHashMap(*oldTable, newTable) != 0) goto err; if (MyDic->alterTable(*oldTable, newTable) != 0) goto err; if (MyDic->endSchemaTrans()) goto err; ndbout_c("done"); } return NDBT_ProgramExit(NDBT_OK); err: NdbError err = MyDic->getNdbError(); if (MyDic->hasSchemaTrans()) MyDic->endSchemaTrans(NdbDictionary::Dictionary::SchemaTransAbort); ndbout << "Failed! " << err << endl; return NDBT_ProgramExit(NDBT_FAILED); }