[ASTERIXDB-1477] Drop feed throw an Internal Error Exception

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Component/s: ING - Ingestion
• Environment: master; commit e311a634634da975d0c9e93d5d56d24a99b12a3f; Date: Tue Jun 7 18:23:16 2016 -0700
• Assignee: Abdullah Alamoudi
• Reporter: Jianfeng Jia
• Created: 09/Jun/16 21:30
• Updated: 07/Mar/18 23:41
• Resolved: 10/Jun/16 22:01

Description

The query is simple to drop an non-existing feed

use dataverse twitter;
drop feed TweetFeed if exists;

Exception:

SEVERE: null 
java.lang.NullPointerException
    at org.apache.asterix.app.external.FeedOperations.buildRemoveFeedStorageJob(FeedOperations.java:166)
    at org.apache.asterix.aql.translator.QueryTranslator.handleDropFeedStatement(QueryTranslator.java:2101)
    at org.apache.asterix.aql.translator.QueryTranslator.compileAndExecute(QueryTranslator.java:356)
    at org.apache.asterix.aql.translator.QueryTranslator.compileAndExecute(QueryTranslator.java:253)
    at org.apache.asterix.api.http.servlet.APIServlet.doPost(APIServlet.java:148)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
    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:231)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:970)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:411)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:904)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
    at org.eclipse.jetty.server.Server.handle(Server.java:347)
    at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:439)
    at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:924)
    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:781)
    at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:220)
    at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:43)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:545)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:43)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529)