Troubleshooting upgrade

Use the information in this section to troubleshoot problems with Data Hub upgrades.

Root disk space

Maintenance upgrades require a certain amount of root disk space. Runtime upgrades require downloading additional parcels, and hence more storage. When you begin an upgrade, CDP checks the available root disk space and issues a warning if there is insufficient root disk space for the upgrade:

If your instances do not have the free space required for an upgrade (CM: 27 GB, other instances: 20 GB), run the scripts below to increase the root volume of the cluster nodes.

Oozie Shared Library mismatch

If the upgraded cluster contains the Oozie service, it may appear as being in bad health after the upgrade due to an known issue with the Oozie server shared library. On the Oozie Shared Library Check page in Cloudera Manager, you will see an error similar to: “The Oozie Server build version and the Oozie Server shared library version do not match.”

To workaround this issue, follow the steps at the end of the Performing a maintenance upgrade section to re-install the Oozie shared libraries and YARN MapReduce Framework JARs.