search pid whethre exists or not

script/gspylib/component/Kernel/Kernel.py

@@ -129,7 +129,13 @@ class Kernel(BaseComponent):
             raise Exception(ErrorCode.GAUSS_516["GAUSS_51610"] %
                             "instance" + " Error: \n%s." % output)
         if output.find("No such process") > 0:
-            GaussLog.exitWithError(output)
+            cmd = "ps c -eo pid,euid,cmd | grep gaussdb | grep -v grep \
+                   | awk '{if($2 == curuid && $1!=\"-n\") print \"/proc/\"$1\"/cwd\"}' \
+                   curuid=`id -u`| xargs ls -l | awk '{if ($NF==\"%s\") print $(NF-2)}' \
+                   | awk -F/ '{print $3 }'" % (self.instInfo.datadir)
+            (status, rightpid) = subprocess.getstatusoutput(cmd)
+            if rightpid:
+                GaussLog.exitWithError(output)
 
     def isPidFileExist(self):
         pidFile = "%s/postmaster.pid" % self.instInfo.datadir