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https://issues.apache.org/jira/browse/FALCON-2073?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15373918#comment-15373918
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ASF GitHub Bot commented on FALCON-2073:
----------------------------------------
GitHub user yzheng-hortonworks opened a pull request:
https://github.com/apache/falcon/pull/223
FALCON-2073 Handle with NULL corner case
Changes:
1. EntityGraph::getDependents should return empty list instead of NULL
value if there is no dependent entities. Affected method include
OozieWorkflowEngine::updateDependant and
AbstractEntityManager::getDependencies. Also removed unnecessary existing NULL
checks after the change.
2. In LogProvider::populateActionLogUrls, handle with the NULL case where
there is no file status under the specified path.
3. FalconClient::getDependency should return empty list instead of NULL
value if there is no dependent entities. Affected method include
FalconEntityCLI::entityCommand.
Extra minor changes in this patch:
4. A regular expression misusage in LogProvider::getActionName. To match
special character ".", should use "[.]" instead of "." which will try to match
any character.
5. Fix a rat check error in Falcon CLI due to the introduction of Spring
shell commands.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/yzheng-hortonworks/falcon FALCON-2073
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/falcon/pull/223.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #223
----
commit c69f9a4b9f13f957611d2da6eca423b6fc07fc64
Author: yzheng-hortonworks <yzh...@hortonworks.com>
Date: 2016-07-12T21:23:29Z
FALCON-2073 Handle with NULL corner case
----
> Handle with NULL corner cases
> -----------------------------
>
> Key: FALCON-2073
> URL: https://issues.apache.org/jira/browse/FALCON-2073
> Project: Falcon
> Issue Type: Bug
> Reporter: Ying Zheng
> Assignee: Ying Zheng
>
> Coverity scan finds a few places where the return value of an object could be
> NULL but Falcon tries to access its member without handling with the corner
> NULL case. For example, cluster update could run into an error if there is no
> dependent entity for the cluster, see OozieWorkflowEngine::updateDependents:
> {code}
> Set<Entity> affectedEntities =
> EntityGraph.get().getDependents(oldEntity);
> for (Entity affectedEntity : affectedEntities) {
> ......
> }
> {code}
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