I am getting following error with Storm topology failing to read the kafka as the data from kafka topic as data gets deleted based on retention(Size). Ideally we want to have storm to move (fast forward) to the first available message. Is there anyway to do this in Storm ? [2015-10-13 14:12:28,204] ERROR [KafkaApi-2] Error when processing fetch request for partition [<topic_name>,0] offset 4231749539 from consumer with correlation id 0 (kafka.server.KafkaApis) kafka.common.OffsetOutOfRangeException: Request for offset 4231749539 but we only have log segments in the range 4255773954 to 4376049622. at kafka.log.Log.read(Log.scala:380) ... View more

We create Kafka Partition using kafka-topics.sh. Would like to validate my understanding is correct. Partitioning strategy is actually performed by Kafka rather than Producer. As per http://kafka.apache.org/07/configuration.html (Important configuration properties for Kafka broker:) producer.DefaultPartitioner<T> - uses the partitioning strategy hash(key)%num_partitions. If key is null, then it picks a random partition. Producer would either pass a key or not which is then used by Kafka Broker to determine partition strategy whether to use Hash Partitioning or Random Key. ... View more

For sending the data to Kafka, Does kafka producer need to know Zookeeper list. My understanding is BrokerList is the only thing which producer needs to know to identify Parition COunt and Partition leader . Or Zookeeper can also provide that information ? ... View more

Would like know if there is a way to run flume in HA mode. ... View more

Wondering what were the driving factors to replace Nagios and Ganglia with Ambari Metrics. ... View more

Storm connectivity to HBase fails with "INFO: Could not update Hbase java.lang.NullPointerException" Looks like Hbase,HDFS and Core site needs to be part of CLASSPATH. Would like to know where exactly it should be. Running storm classpath command shows below but doesnt show the *.*xml files. storm classpath /usr/hdp/2.2.6.0-2800/storm/lib/commons-configuration-1.10.jar:/usr/hdp/2.2.6.0-2800/storm/lib/ranger-plugins-common-0.4.0.2.2.6.0-2800.jar:/usr/hdp/2.2.6.0-2800/storm/lib/javax.persistence-2.1.0.jar:/usr/hdp/2.2.6.0-2800/storm/lib/ambari-metrics-storm-sink.jar:/usr/hdp/2.2.6.0-2800/storm/lib/objenesis-1.2.jar:/usr/hdp/2.2.6.0-2800/storm/lib/slf4j-api-1.6.5.jar:/usr/hdp/2.2.6.0-2800/storm/lib/ring-jetty-adapter-1.3.0.jar:/usr/hdp/2.2.6.0-2800/storm/lib/tools.logging-0.2.3.jar:/usr/hdp/2.2.6.0-2800/storm/lib/minlog-1.2.jar:/usr/hdp/2.2.6.0-2800/storm/lib/ranger-plugins-cred-0.4.0.2.2.6.0-2800.jar:/usr/hdp/2.2.6.0-2800/storm/lib/jetty-client-7.6.13.v20130916.jar:/usr/hdp/2.2.6.0-2800/storm/lib/jetty-server-7.6.13.v20130916.jar:/usr/hdp/2.2.6.0-2800/storm/lib/jersey-bundle-1.17.1.jar:/usr/hdp/2.2.6.0-2800/storm/lib/crypto-equality-1.0.0.jar:/usr/hdp/2.2.6.0-2800/storm/lib/tools.namespace-0.2.4.jar:/usr/hdp/2.2.6.0-2800/storm/lib/commons-exec-1.1.jar:/usr/hdp/2.2.6.0-2800/storm/lib/hiccup-0.3.6.jar:/usr/hdp/2.2.6.0-2800/storm/lib/jetty-servlet-7.6.13.v20130916.jar:/usr/hdp/2.2.6.0-2800/storm/lib/carbonite-1.4.0.jar:/usr/hdp/2.2.6.0-2800/storm/lib/hadoop-common-2.6.0.2.2.6.0-2800.jar:/usr/hdp/2.2.6.0-2800/storm/lib/math.numeric-tower-0.0.1.jar:/usr/hdp/2.2.6.0-2800/storm/lib/jgrapht-core-0.9.0.jar:/usr/hdp/2.2.6.0-2800/storm/lib/logback-core-1.0.6.jar:/usr/hdp/2.2.6.0-2800/storm/lib/jetty-security-7.6.13.v20130916.jar:/usr/hdp/2.2.6.0-2800/storm/lib/commons-io-2.4.jar:/usr/hdp/2.2.6.0-2800/storm/lib/javax.servlet-2.5.0.v201103041518.jar:/usr/hdp/2.2.6.0-2800/storm/lib/servlet-api-2.5.jar:/usr/hdp/2.2.6.0-2800/storm/lib/commons-collections-3.2.1.jar:/usr/hdp/2.2.6.0-2800/storm/lib/ring-devel-1.3.0.jar:/usr/hdp/2.2.6.0-2800/storm/lib/chill-java-0.3.5.jar:/usr/hdp/2.2.6.0-2800/storm/lib/core.incubator-0.1.0.jar:/usr/hdp/2.2.6.0-2800/storm/lib/gmetric4j-1.0.7.jar:/usr/hdp/2.2.6.0-2800/storm/lib/tools.macro-0.1.0.jar:/usr/hdp/2.2.6.0-2800/storm/lib/disruptor-2.10.1.jar:/usr/hdp/2.2.6.0-2800/storm/lib/tools.cli-0.2.4.jar:/usr/hdp/2.2.6.0-2800/storm/lib/ring-servlet-1.3.0.jar:/usr/hdp/2.2.6.0-2800/storm/lib/commons-fileupload-1.2.1.jar:/usr/hdp/2.2.6.0-2800/storm/lib/compojure-1.1.3.jar:/usr/hdp/2.2.6.0-2800/storm/lib/kryo-2.21.jar:/usr/hdp/2.2.6.0-2800/storm/lib/asm-4.0.jar:/usr/hdp/2.2.6.0-2800/storm/lib/ns-tracker-0.2.2.jar:/usr/hdp/2.2.6.0-2800/storm/lib/commons-lang-2.5.jar:/usr/hdp/2.2.6.0-2800/storm/lib/storm-core-0.9.3.2.2.6.0-2800.jar:/usr/hdp/2.2.6.0-2800/storm/lib/json-simple-1.1.jar:/usr/hdp/2.2.6.0-2800/storm/lib/snakeyaml-1.11.jar:/usr/hdp/2.2.6.0-2800/storm/lib/log4j-over-slf4j-1.6.6.jar:/usr/hdp/2.2.6.0-2800/storm/lib/clojure-1.5.1.jar:/usr/hdp/2.2.6.0-2800/storm/lib/guava-11.0.2.jar:/usr/hdp/2.2.6.0-2800/storm/lib/reflectasm-1.07-shaded.jar:/usr/hdp/2.2.6.0-2800/storm/lib/ring-anti-forgery-1.0.0.jar:/usr/hdp/2.2.6.0-2800/storm/lib/crypto-random-1.2.0.jar:/usr/hdp/2.2.6.0-2800/storm/lib/ring-core-1.1.5.jar:/usr/hdp/2.2.6.0-2800/storm/lib/jetty-servlets-7.6.13.v20130916.jar:/usr/hdp/2.2.6.0-2800/storm/lib/joda-time-2.0.jar:/usr/hdp/2.2.6.0-2800/storm/lib/ranger-plugins-audit-0.4.0.2.2.6.0-2800.jar:/usr/hdp/2.2.6.0-2800/storm/lib/jetty-io-7.6.13.v20130916.jar:/usr/hdp/2.2.6.0-2800/storm/lib/commons-codec-1.6.jar:/usr/hdp/2.2.6.0-2800/storm/lib/ranger-plugins-impl-0.4.0.2.2.6.0-2800.jar:/usr/hdp/2.2.6.0-2800/storm/lib/oncrpc-1.0.7.jar:/usr/hdp/2.2.6.0-2800/storm/lib/jetty-util-7.6.13.v20130916.jar:/usr/hdp/2.2.6.0-2800/storm/lib/clout-1.0.1.jar:/usr/hdp/2.2.6.0-2800/storm/lib/eclipselink-2.5.2-M1.jar:/usr/hdp/2.2.6.0-2800/storm/lib/clj-time-0.4.1.jar:/usr/hdp/2.2.6.0-2800/storm/lib/jetty-http-7.6.13.v20130916.jar:/usr/hdp/2.2.6.0-2800/storm/lib/java.classpath-0.2.2.jar:/usr/hdp/2.2.6.0-2800/storm/lib/zookeeper.jar:/usr/hdp/2.2.6.0-2800/storm/lib/jetty-continuation-7.6.13.v20130916.jar:/usr/hdp/2.2.6.0-2800/storm/lib/clj-stacktrace-0.2.4.jar:/usr/hdp/2.2.6.0-2800/storm/lib/gson-2.2.4.jar:/usr/hdp/2.2.6.0-2800/storm/lib/ranger-storm-plugin-0.4.0.2.2.6.0-2800.jar:/usr/hdp/2.2.6.0-2800/storm/lib/commons-logging-1.2.jar:/usr/hdp/2.2.6.0-2800/storm/lib/logback-classic-1.0.6.jar:/usr/hdp/2.2.6.0-2800/storm/lib/hadoop-auth-2.4.0.jar Browsing the internet shows that the files should be under .storm. Hence created the .storm directory and copied the *.*xml files to .storm but still no luck . Any ideas ? ... View more