Hadoop MapReduce task returns wrong results after one of the servers from the cluster is stopped ------------------------------------------------------------------------------------------------- Key: ISPN-6087 URL: https://issues.jboss.org/browse/ISPN-6087 Project: Infinispan Issue Type: Bug Components: Hadoop Integration Reporter: Anna Manukyan Assignee: Gustavo Fernandes Attachments: FailoverTest.log The test is performed on 4 node cluster. The data read is performed from Infinispan cache, the write is performed to HDFS. There are 200000 entries in the cache. As soon as the Hadoop Job is submitted for performing map/reduce task, one of the servers from the cluster is stopped. The MapReduce task performs calculation of word count. As a result, the Hadoop Map/Reduce result map contains wrong results, that is the number of the certain words found is greater than it is expected. The failure doesn't always happen. It depends on which stage was the mapreduce task when the server stopped. You can find the test execution log attached.