[jira] [Created] (ASTERIXDB-1426) NPE on Drop Feed if Exists

["Murtadha Hubail (JIRA)" <ji...@apache.org>]

Murtadha Hubail created ASTERIXDB-1426:
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             Summary: NPE on Drop Feed if Exists
                 Key: ASTERIXDB-1426
                 URL: https://issues.apache.org/jira/browse/ASTERIXDB-1426
             Project: Apache AsterixDB
          Issue Type: Bug
          Components: Feeds
            Reporter: Murtadha Hubail
            Assignee: Abdullah Alamoudi


If a feed doesn't exist and a "drop feed <name> if exists" is executed, a NPE is thrown.

To reproduce the issue, run the following statements:
drop dataverse test if exists;
create dataverse test;
use dataverse test;
drop feed test_feed if exists;

Here is the stacktrace:
java.lang.NullPointerException
	at org.apache.asterix.app.external.FeedOperations.buildRemoveFeedStorageJob(FeedOperations.java:264)
	at org.apache.asterix.aql.translator.QueryTranslator.handleDropFeedStatement(QueryTranslator.java:2103)
	at org.apache.asterix.aql.translator.QueryTranslator.compileAndExecute(QueryTranslator.java:358)
	at org.apache.asterix.aql.translator.QueryTranslator.compileAndExecute(QueryTranslator.java:254)
	at org.apache.asterix.api.http.servlet.APIServlet.doPost(APIServlet.java:148)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:546)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:483)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:228)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:956)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:411)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:188)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:891)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:114)
	at org.eclipse.jetty.server.Server.handle(Server.java:353)
	at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:598)
	at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:1076)
	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:805)
	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:218)
	at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:427)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:510)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.access$000(SelectChannelEndPoint.java:34)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:450)
	at java.lang.Thread.run(Thread.java:745)



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