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ambari-server/src/main/resources/custom_actions/scripts/remove_bits.py (line 46) <https://reviews.apache.org/r/39955/#comment163588> Instead of hardcoding the list of packages, cant we build the list of packages similar to how we do for Install Packages from the stack definition? That way it would work for all OSes. - Jayush Luniya On Nov. 4, 2015, 10:38 p.m., Alejandro Fernandez wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviews.apache.org/r/39955/ > ----------------------------------------------------------- > > (Updated Nov. 4, 2015, 10:38 p.m.) > > > Review request for Ambari, Dmytro Grinenko, Dmitro Lisnichenko, Jayush > Luniya, Nate Cole, and Swapan Shridhar. > > > Bugs: AMBARI-13723 > https://issues.apache.org/jira/browse/AMBARI-13723 > > > Repository: ambari > > > Description > ------- > > We found a major flaw in the Express Upgrade from 2.1->2.3. Basically, > "hadoop" bin still points to the old binary because we had to install HDP 2.3 > while 2.1 bits still existed. > > **Manual Upgrade Instructions:** > > * Stop all services using 2.1 > * yum erase hadoop hdfs hive … (this will remove scripts /usr/bin/hadoop, > /usr/bin/hdfs, /usr/bin/hive, etc/) > * yum install hadoop_2_3_* hdfs_2_3_* hive_2_3_* (rpm should point > /usr/bin/hadoop -> /usr/hdp/current/hadoop-client/bin/hadoop) > * Change the version to 2.3 (hdp-select, conf-select, etc.) > * Start all services, and hence MR Service Check passes with "hadoop" command > > **Express Upgrade:** > > * Install HDP 2.3 bits. We reused the RU framework that relies on a 2 step > process: install bits, perform upgrade. Hence, /usr/bin/hadoop is still using > 2.1 bits > * Stop all services using 2.1 > * Change the version to 2.3 (hdp-select, conf-select, etc.) > * Start all services, will fail on MR Service Check because ExecuteHadoop() > resource calls "hadoop" command, which is still pointing to 2.1 bits! > > One solution is for the orchestration to remove the 2.1 bits before starting > using 2.3. > Uninstalling the 2.1 bits will remove /usr/bin/hadoop, but when we call > "hdp-select set hadoop-client <new_version>" it will create the symlink > /usr/bin/hadoop -> /usr/hdp/current/hadoop-client/bin/hadoop > > > Diffs > ----- > > ambari-server/src/main/resources/custom_actions/scripts/remove_bits.py > PRE-CREATION > > ambari-server/src/main/resources/stacks/HDP/2.1/upgrades/nonrolling-upgrade-2.3.xml > 91d4f64 > > Diff: https://reviews.apache.org/r/39955/diff/ > > > Testing > ------- > > Verified during Express Upgrade from HDP 2.1->2.3 > > > Thanks, > > Alejandro Fernandez > >
