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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-10202) createSnapshotPolicy API create multiple entries in DB for same parameters.
Date Mon, 25 Dec 2017 08:45:00 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-10202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16303145#comment-16303145
] 

ASF GitHub Bot commented on CLOUDSTACK-10202:
---------------------------------------------

niteshsarda commented on a change in pull request #2373: CLOUDSTACK-10202:createSnapshotPolicy
API create multiple entries in DB for same parameters.
URL: https://github.com/apache/cloudstack/pull/2373#discussion_r158630780
 
 

 ##########
 File path: server/src/com/cloud/storage/snapshot/SnapshotManagerImpl.java
 ##########
 @@ -854,15 +856,18 @@ public SnapshotPolicyVO createPolicy(CreateSnapshotPolicyCmd cmd, Account
policy
                 throw new InvalidParameterValueException("Max number of snapshots shouldn't
exceed the " + message + " level snapshot limit");
             }
         }
-        SnapshotPolicyVO policy = _snapshotPolicyDao.findOneByVolumeInterval(volumeId, intvType);
-        if (policy == null) {
-            policy = new SnapshotPolicyVO(volumeId, cmd.getSchedule(), timezoneId, intvType,
cmd.getMaxSnaps(), display);
-            policy = _snapshotPolicyDao.persist(policy);
-            _snapSchedMgr.scheduleNextSnapshotJob(policy);
-        } else {
-            try {
+
+        final GlobalLock createSnapshotPolicyLock = GlobalLock.getInternLock("createSnapshotPolicy");
 
 Review comment:
   @marcaurele : Implemented the changes as per your suggestion.

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> createSnapshotPolicy API create multiple entries in DB for same parameters.
> ---------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-10202
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-10202
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>            Reporter: Nitesh Sarda
>
> *ISSUE :*
> createSnapshotPolicy API create multiple entries in DB for same parameters, if multiple
threads are executed in parallel.
> *STEPS TO REPRODUCE :*
> # Created a new machine having root and data disk.
> # Make sure that no existing snapshot policy is present for the volume.
> # Execute multiple threads in parallel for createSnapshotPolicy API having all required
parameters exactly same.
> # Verify table snapshot_policy in DB, will get multiple entries for same policy.
> # Once again execute same multiple threads, by changing any API parameter, will see that
existing entries are getting modified in DB and no new entries are added.



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