1. The observed "java.lang.ClassNotFoundException: Class org.apache.ignite.hadoop.fs.v1.IgniteHadoopFileSystem not found " suggests that TEZ does not have IgniteHadoopFileSystem in class path. Please check how TEZ composes the classpath and if it adds all the libs from /usr/hdp/2.6.0.3-8/hadoop/lib .
2. Can you please provide full logs: all Ignite logs and the client console log. 3. Please make sure option --hiveconf ignite.job.shared.classloader=false really takes effect: e.g. execute "set ignite.job.shared.classloader" query on Hive: what does it print? This is very important to have this option to be set to false to ensure correct Hive execution , otherwise very bad consequences like https://issues.apache.org/jira/browse/IGNITE-4720 and https://issues.apache.org/jira/browse/IGNITE-5044 are possible. The link you're referring is about execution Hive tasks over TEZ, not over Ignite-MR, so I have some doubt the "vectorized execution" property advice is relevant there. Also note that the advice mentions 2 properties: "set hive.vectorized.execution.enabled=false; set hive.vectorized.execution.reduce.enabled=false; " About OutOfMem: please see Ignite logs (run ignite.sh with with "-v") -- how memory is utilized on Ignite nodes? What error happens first? In Java8 the metaspace size is configured with "-XX:MaxMetaspaceSize=<metaspace size>[g|m|k] " option. Also please note that "hive.rpc.query.plan=true" property is *required* to execute Hive queries on Ignite MR successfully. -- View this message in context: http://apache-ignite-users.70518.x6.nabble.com/HDP-Hive-Ignite-tp12195p12307.html Sent from the Apache Ignite Users mailing list archive at Nabble.com.
