diff --git a/Jenkinsfile b/Jenkinsfile
index 433b46067a956833c89dd6c4d517f4d4675e4063..bac0cce33b9b645373170247fb91df31fad6f646 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -42,12 +42,12 @@ def pre_test(){
     killall -9 taosd ||echo "no taosd running"
     killall -9 gdb || echo "no gdb running"
     cd ${WKC}
-    git checkout develop
     git reset --hard HEAD~10 >/dev/null 
+    git checkout develop
     git pull >/dev/null
     git fetch origin +refs/pull/${CHANGE_ID}/merge
     git checkout -qf FETCH_HEAD
-    find ${WKC}/tests/pytest -name \'*\'.sql -exec rm -rf {} \\;
+    git clean -dfx
     cd ${WK}
     git reset --hard HEAD~10
     git checkout develop 
@@ -55,7 +55,7 @@ def pre_test(){
     cd ${WK}
     export TZ=Asia/Harbin
     date
-    rm -rf ${WK}/debug
+    git clean -dfx
     mkdir debug
     cd debug
     cmake .. > /dev/null
diff --git a/tests/test-all.sh b/tests/test-all.sh
index 883c1495e94a59d31d22495f2c961aa37e5d0e38..3c8aed7d186aab0038103fe50d57137d79db08e2 100755
--- a/tests/test-all.sh
+++ b/tests/test-all.sh
@@ -25,29 +25,24 @@ function stopTaosd {
 function dohavecore(){
   corefile=`find $corepath -mmin 1`  
   core_file=`echo $corefile|cut -d " " -f2`
-  echo "corefile:$core_file"
-  echo "corepath:$corepath"
-  ls -l $corepath
   proc=`echo $corefile|cut -d "_" -f3`
   if [ -n "$corefile" ];then
     echo 'taosd or taos has generated core'
+    rm case.log
     if [[ "$tests_dir" == *"$IN_TDINTERNAL"* ]] && [[ $1 == 1 ]]; then
       cd ../../../
       tar -zcPf $corepath'taos_'`date "+%Y_%m_%d_%H_%M_%S"`.tar.gz debug/build/bin/taosd debug/build/bin/tsim debug/build/lib/libtaos*so*
       if [[ $2 == 1 ]];then
         cp -r sim ~/sim_`date "+%Y_%m_%d_%H:%M:%S"`
-        rm -rf sim/case.log
       else
         cd community
         cp -r sim ~/sim_`date "+%Y_%m_%d_%H:%M:%S" `
-        rm -rf sim/case.log
       fi
     else 
       cd ../../
       if [[ $1 == 1 ]];then 
         tar -zcPf $corepath'taos_'`date "+%Y_%m_%d_%H_%M_%S"`.tar.gz debug/build/bin/taosd debug/build/bin/tsim debug/build/lib/libtaos*so*
         cp -r sim ~/sim_`date "+%Y_%m_%d_%H:%M:%S" `
-        rm -rf sim/case.log
       fi
     fi
     if [[ $1 == 1 ]];then
@@ -82,7 +77,6 @@ function runSimCaseOneByOne {
       # fi
       end_time=`date +%s`
       echo execution time of $case was `expr $end_time - $start_time`s. | tee -a out.log
-      dohavecore 0
     fi
   done < $1
 }
@@ -99,26 +93,25 @@ function runSimCaseOneByOnefq {
       date +%F\ %T | tee -a out.log
       if [[ "$tests_dir" == *"$IN_TDINTERNAL"* ]]; then
         echo -n $case
-        ./test.sh -f $case > ../../../sim/case.log 2>&1 && \
+        ./test.sh -f $case > case.log 2>&1 && \
         ( grep -q 'script.*'$case'.*failed.*, err.*lineNum' ../../../sim/tsim/log/taoslog0.0 && echo -e "${RED} failed${NC}" | tee -a out.log  ||  echo -e "${GREEN} success${NC}" | tee -a out.log )|| \
         ( grep -q 'script.*success.*m$' ../../../sim/tsim/log/taoslog0.0 && echo -e "${GREEN} success${NC}" | tee -a out.log )  || \
-        ( echo -e "${RED} failed${NC}" | tee -a out.log && echo '=====================log=====================' && cat ../../../sim/case.log )
+        ( echo -e "${RED} failed${NC}" | tee -a out.log && echo '=====================log=====================' && cat case.log )
       else
         echo -n $case
         ./test.sh -f $case > ../../sim/case.log 2>&1 && \
         ( grep -q 'script.*'$case'.*failed.*, err.*lineNum' ../../sim/tsim/log/taoslog0.0 && echo -e "${RED} failed${NC}" | tee -a out.log  ||  echo -e "${GREEN} success${NC}" | tee -a out.log )|| \
         ( grep -q 'script.*success.*m$' ../../sim/tsim/log/taoslog0.0 && echo -e "${GREEN} success${NC}" | tee -a out.log )  || \
-        ( echo -e "${RED} failed${NC}" | tee -a out.log && echo '=====================log=====================' &&  cat ../../sim/case.log )
+        ( echo -e "${RED} failed${NC}" | tee -a out.log && echo '=====================log=====================' &&  cat case.log )
       fi
       
       out_log=`tail -1 out.log  `
       if [[ $out_log =~ 'failed' ]];then
+        rm case.log
         if [[ "$tests_dir" == *"$IN_TDINTERNAL"* ]]; then
           cp -r ../../../sim ~/sim_`date "+%Y_%m_%d_%H:%M:%S"`
-          rm -rf ../../../sim/case.log
         else 
           cp -r ../../sim ~/sim_`date "+%Y_%m_%d_%H:%M:%S" `
-          rm -rf ../../sim/case.log
         fi
         dohavecore $2 1
         if [[ $2 == 1 ]];then
@@ -159,7 +152,6 @@ function runPyCaseOneByOne {
       else
         $line > /dev/null 2>&1
       fi
-      dohavecore 0
     fi
   done < $1
 }
@@ -185,7 +177,7 @@ function runPyCaseOneByOnefq() {
         start_time=`date +%s`
         date +%F\ %T | tee -a pytest-out.log
         echo -n $case
-        $line > ../../sim/case.log 2>&1 && \
+        $line > case.log 2>&1 && \
           echo -e "${GREEN} success${NC}" | tee -a pytest-out.log || \
           echo -e "${RED} failed${NC}" | tee -a pytest-out.log 
         end_time=`date +%s`
@@ -193,8 +185,8 @@ function runPyCaseOneByOnefq() {
         if [[ $out_log =~ 'failed' ]];then
           cp -r ../../sim ~/sim_`date "+%Y_%m_%d_%H:%M:%S" `
           echo '=====================log===================== '
-          cat ../../sim/case.log
-          rm -rf ../../sim/case.log
+          cat case.log
+          rm -rf case.log
           dohavecore $2 2
           if [[ $2 == 1 ]];then
             exit 8