the instance page duration field content added empty filter processing. (#4938)

dolphinscheduler-ui/src/js/conf/home/pages/projects/pages/instance/pages/list/_source/list.vue

@@ -56,7 +56,11 @@
             <span>{{scope.row.endTime | formatDate}}</span>
           </template>
         </el-table-column>
-        <el-table-column prop="duration" :label="$t('Duration')"></el-table-column>
+        <el-table-column :label="$t('Duration')">
+          <template slot-scope="scope">
+            <span>{{scope.row.duration | filterNull}}</span>
+          </template>
+        </el-table-column>
         <el-table-column prop="runTimes" :label="$t('Run Times')"></el-table-column>
         <el-table-column prop="recovery" :label="$t('fault-tolerant sign')"></el-table-column>
         <el-table-column prop="executorName" :label="$t('Executor')"></el-table-column>

dolphinscheduler-ui/src/js/conf/home/pages/projects/pages/taskInstance/_source/list.vue

@@ -53,9 +53,17 @@
             <span>{{scope.row.endTime | formatDate}}</span>
           </template>
         </el-table-column>
-        <el-table-column prop="host" :label="$t('host')" width="150"></el-table-column>
-        <el-table-column prop="duration" :label="$t('Duration')"></el-table-column>
+        <el-table-column :label="$t('Duration')">
+          <template slot-scope="scope">
+            <span>{{scope.row.duration | filterNull}}</span>
+          </template>
+        </el-table-column>
         <el-table-column prop="retryTimes" :label="$t('Retry Count')"></el-table-column>
+        <el-table-column :label="$t('host')">
+          <template slot-scope="scope">
+            <span>{{scope.row.host | filterNull}}</span>
+          </template>
+        </el-table-column>
         <el-table-column :label="$t('Operation')" width="80" fixed="right">
           <template slot-scope="scope">
             <div>