diff --git a/.travis.yml b/.travis.yml
index fcb2e8f22f94bf137966b7a3dd849a673303e587..bb9ee5d43050cc6cbf7a658593800b6fce457bdd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -135,92 +135,6 @@ matrix:
         #   https://scan.coverity.com/faq#frequency
         branch_pattern: coverity_scan
 
-  - os: linux
-    dist: bionic
-    language: c
-    compiler: gcc
-    env: ENV_COVER=true
-
-    git:
-      - depth: 1
-
-    addons:
-      apt:
-        packages:
-          - build-essential
-          - cmake
-          - net-tools
-          - python-pip
-          - python-setuptools
-          - python3-pip
-          - python3-setuptools
-          - lcov
-          - psmisc
-
-    before_script:
-      - cd ${TRAVIS_BUILD_DIR}
-      - mkdir debug
-      - cd debug
-
-    script:
-      - cmake -DCOVER=true .. > /dev/null
-      - make > /dev/null
-
-    after_success:
-      - |-
-        case $TRAVIS_OS_NAME in
-          linux)
-          cd ${TRAVIS_BUILD_DIR}/debug
-          make install > /dev/null || travis_terminate $?
-
-          pip install numpy
-          pip install --user ${TRAVIS_BUILD_DIR}/src/connector/python/linux/python2/
-          pip3 install numpy
-          pip3 install --user ${TRAVIS_BUILD_DIR}/src/connector/python/linux/python3/
-
-          cd ${TRAVIS_BUILD_DIR}/tests
-
-          ./test-all.sh smoke COVER
-
-          TEST_RESULT=$?
-
-          pkill taosd
-          sleep 1
-
-          cd ${TRAVIS_BUILD_DIR}
-          lcov -d . --capture --rc lcov_branch_coverage=1 -o coverage.info
-          lcov --remove coverage.info '*/tests/*' '*/test/*' '*/deps/*' '*/plugins/*' -o coverage.info
-          lcov -l --rc lcov_branch_coverage=1 coverage.info || travis_terminate $?
-
-          gem install coveralls-lcov
-
-          # Color setting
-          RED='\033[0;31m'
-          GREEN='\033[1;32m'
-          GREEN_DARK='\033[0;32m'
-          GREEN_UNDERLINE='\033[4;32m'
-          NC='\033[0m'
-
-          coveralls-lcov coverage.info
-          if [ "$?" -eq "0" ]; then
-            echo -e "${GREEN} ## Uploaded to Coveralls.io! ## ${NC}"
-          else
-            echo -e "${RED} ## Coveralls.io not collect coverage report! ## ${NC} "
-          fi
-
-          bash <(curl -s https://codecov.io/bash) -y .codecov.yml -f coverage.info
-          if [ "$?" -eq "0" ]; then
-            echo -e "${GREEN} ## Uploaded to Codecov! ## ${NC} "
-          else
-            echo -e "${RED} ## Codecov did not collect coverage report! ## ${NC} "
-          fi
-
-          if [ "$TEST_RESULT" -ne "0" ]; then
-            travis_terminate $?
-          fi
-          ;;
-        esac
-
   - os: linux
     dist: trusty
     language: c
diff --git a/README.md b/README.md
index c6d92d0bd231a43a9f1b75abb976e646f03ba7bf..e6da690dabf097753bad97c17e3828eaba43d97f 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 [![Build Status](https://travis-ci.org/taosdata/TDengine.svg?branch=master)](https://travis-ci.org/taosdata/TDengine)
 [![Build status](https://ci.appveyor.com/api/projects/status/kf3pwh2or5afsgl9/branch/master?svg=true)](https://ci.appveyor.com/project/sangshuduo/tdengine-2n8ge/branch/master)
+[![Coverage Status](https://coveralls.io/repos/github/taosdata/TDengine/badge.svg?branch=develop)](https://coveralls.io/github/taosdata/TDengine?branch=develop)
 
 [![TDengine](TDenginelogo.png)](https://www.taosdata.com)
 
diff --git a/src/client/src/tscParseInsert.c b/src/client/src/tscParseInsert.c
index 69bc4a3e20049aaa520df99393dcb17a80950ab4..4020d201ce4fcb84cf9e27857bfc07e204b4f203 100644
--- a/src/client/src/tscParseInsert.c
+++ b/src/client/src/tscParseInsert.c
@@ -46,18 +46,20 @@ static int32_t tscToInteger(SSQLToken *pToken, int64_t *value, char **endPtr) {
     return TK_ILLEGAL;
   }
   
-  int32_t radix = 10;
-  
-  int32_t radixList[3] = {16, 8, 2}; // the integer number with different radix: hex, oct, bin
-  if (pToken->type == TK_HEX || pToken->type == TK_OCT || pToken->type == TK_BIN) {
-    radix = radixList[pToken->type - TK_HEX];
-  }
-
   errno = 0;
-  *value = strtoll(pToken->z, endPtr, radix);
+  *value = strtoll(pToken->z, endPtr, 0);
+  if (**endPtr == 'e' || **endPtr == 'E' || **endPtr == '.') {
+    errno = 0;
+    double v = round(strtod(pToken->z, endPtr));
+    if (v > INT64_MAX || v <= INT64_MIN) {
+      errno = ERANGE;
+    } else {
+      *value = v;
+    }
+  }
   
   // not a valid integer number, return error
-  if ((pToken->type == TK_STRING || pToken->type == TK_ID) && ((*endPtr - pToken->z) != pToken->n)) {
+  if (*endPtr - pToken->z != pToken->n) {
     return TK_ILLEGAL;
   }
 
@@ -73,11 +75,11 @@ static int32_t tscToDouble(SSQLToken *pToken, double *value, char **endPtr) {
   *value = strtod(pToken->z, endPtr);
   
   // not a valid integer number, return error
-  if ((pToken->type == TK_STRING || pToken->type == TK_ID) && ((*endPtr - pToken->z) != pToken->n)) {
+  if ((*endPtr - pToken->z) != pToken->n) {
     return TK_ILLEGAL;
-  } else {
-    return pToken->type;
   }
+
+  return pToken->type;
 }
 
 int tsParseTime(SSQLToken *pToken, int64_t *time, char **next, char *error, int16_t timePrec) {
diff --git a/src/tsdb/src/tsdbMain.c b/src/tsdb/src/tsdbMain.c
index ac334e8ed1be576057ee11b8ae8bb65b5080759e..92a5895f21123ff41d2037a91f3f39f5957d8d42 100644
--- a/src/tsdb/src/tsdbMain.c
+++ b/src/tsdb/src/tsdbMain.c
@@ -213,10 +213,10 @@ uint32_t tsdbGetFileInfo(TSDB_REPO_T *repo, char *name, uint32_t *index, uint32_
       SFileGroup *pFGroup =
           taosbsearch(&fid, pFileH->pFGroup, pFileH->nFGroups, sizeof(SFileGroup), keyFGroupCompFunc, TD_GE);
       if (pFGroup->fileId == fid) {
-        strcpy(fname, pFGroup->files[(*index) % 3].fname);
+        fname = strdup(pFGroup->files[(*index) % 3].fname);
       } else {
         if (pFGroup->fileId * 3 + 2 < eindex) {
-          strcpy(fname, pFGroup->files[0].fname);
+          fname = strdup(pFGroup->files[0].fname);
           *index = pFGroup->fileId * 3;
         } else {
           tfree(sdup);