AdminHelpdice Team30 May, 2024What is speculative execution in Hadoop?Hadoop executes the delayed map/reduce tasks in parallel in other Datanodes, speculating failures/delays in Datanodes.Hadoop always executes every map/reduce task in more than one Datanode, speculatively.Hadoop does not implement any speculative execution unless specified by the user.Nodes in Hadoop cluster never fail. So there is no speculative execution in Hadoop.Check AnswerRelated MCQ's In order to apply a combiner, what is one property that has to be satisfied by the values emitted from the mapper?...Tue, 29 JulKeys from the output of shuffle and sort implement which of the following interface?...Tue, 29 JulWhich demon is responsible for replication of data in Hadoop?...Tue, 29 JulWhich of the following is false about RawComparator?...Tue, 29 JulWhich one of the following is not a main component of HBase?...Tue, 29 JulWhich one of the following statements is false regarding the Distributed Cache?...Tue, 29 JulWhich one of the following statements is true regarding <key,value> pairs of a MapReduce job?...Tue, 29 JulThe org.apache.hadoop.io.Writable interface declares which two methods?...Tue, 29 JulWhich of the following components retrieves the input splits directly from HDFS to determine the number of map task...Tue, 29 JulWhich of the following are among the duties of the Data Nodes in HDFS?...Tue, 29 Jul
