fix(wal): snapshot end with no deleting

source/dnode/vnode/src/tq/tq.c

@@ -583,7 +583,7 @@ int32_t tqProcessVgChangeReq(STQ* pTq, char* msg, int32_t msgLen) {
       pHandle->execHandle.execTb.suid = req.suid;
       SArray* tbUidList = taosArrayInit(0, sizeof(int64_t));
       vnodeGetCtbIdList(pTq->pVnode, req.suid, tbUidList);
-      tqDebug("vgId:%d, tq try get suid:%" PRId64, pTq->pVnode->config.vgId, req.suid);
+      tqDebug("vgId:%d, tq try to get all ctb, suid:%" PRId64, pTq->pVnode->config.vgId, req.suid);
       for (int32_t i = 0; i < taosArrayGetSize(tbUidList); i++) {
         int64_t tbUid = *(int64_t*)taosArrayGet(tbUidList, i);
         tqDebug("vgId:%d, idx %d, uid:%" PRId64, TD_VID(pTq->pVnode), i, tbUid);

source/dnode/vnode/src/vnd/vnodeCfg.c

@@ -40,8 +40,8 @@ const SVnodeCfg vnodeCfgDefault = {.vgId = -1,
                                            .vgId = -1,
                                            .fsyncPeriod = 0,
                                            .retentionPeriod = -1,
-                                           .rollPeriod = -1,
-                                           .segSize = -1,
+                                           .rollPeriod = 0,
+                                           .segSize = 0,
                                            .retentionSize = -1,
                                            .level = TAOS_WAL_WRITE,
                                        },

source/libs/wal/src/walWrite.c

@@ -277,6 +277,7 @@ int32_t walEndSnapshot(SWal *pWal) {
   tmp.firstVer = ver;
   // find files safe to delete
   SWalFileInfo *pInfo = taosArraySearch(pWal->fileInfoSet, &tmp, compareWalFileInfo, TD_LE);
+  if (pInfo) {
     if (ver >= pInfo->lastVer) {
       pInfo++;
     }
@@ -307,6 +308,7 @@ int32_t walEndSnapshot(SWal *pWal) {
     } else {
       pWal->vers.firstVer = ((SWalFileInfo *)taosArrayGet(pWal->fileInfoSet, 0))->firstVer;
     }
+  }
   pWal->writeCur = taosArrayGetSize(pWal->fileInfoSet) - 1;
   pWal->totSize = newTotSize;
   pWal->vers.verInSnapshotting = -1;