@vishal patil I dont think this is possible as Kafka is not a consume-delete semantic framework and multiple consumers might be reading from the same queue. This http://stackoverflow.com/questions/28586008/delete-message-after-consuming-it-in-kafka has details for your question. Also refer https://www.quora.com/I-want-to-delete-the-message-from-a-Kafka-broker-after-consuming-it-How-can-I-do-that#MoreAnswers. ... View more

HWX doesn't support individual component upgrade, it requires to upgrade the full HDP platform. HDP 2.5 ( ETA summer ) is due to ship with Storm 1.0. If you want to upgrade ahead of the release, you probably want to look into the apache storm documentation. ... View more

i have check if those services are running in background and still Ambari is showing them stopped? Say for datanode, check these: 1. ps -ef | grep -i datanode 2. cat /var/run/hadoop/hdfs/hadoop-hdfs-datanode.pid 3. See if both id's are matching. If not, kill process, remove /var/run/hadoop/hdfs/hadoop-hdfs-datanode.pid, and start service from Ambari. If above is not the case, check ambari-agent log for message: {'msg':'Unable to read structured output from /var/lib/ambari-agent/data/structured-out-status.json'} If you are able to see this message, stop ambari agent move /var/lib/ambari-agent/data/structured-out-status.json to /tmp. Start ambari agent. ... View more