Cloudera Docs

Check co-processor classes

External co-processors are not automatically upgraded, you must upgrade them manually. Before upgrading, ensure that your co-processors are compatible with the upgrade.

There are two ways to handle co-processor upgrade:
  • Upgrade your co-processor jars manually before continuing the upgrade.
  • Temporarily unset the co-processors and continue the upgrade.

    Once they are manually upgraded, they can be reset.

Attempting to upgrade without upgrading the co-processor jars can result in unpredictable behaviour such as HBase role start failure, HBase role crashing, or even data corruption.

  1. Download and distribute parcels for target version of CDP Private Cloud Base.

    If the downloaded parcel version is higher than the current Cloudera Manager version, the following error message displayed:

    Error for parcel CDH-7.X.parcel : Parcel version 7.X is not supported by this version of Cloudera Manager. Upgrade Cloudera Manager to at least 7.X before using this version of the parcel.

    You can safely ignore this error message.

  2. Run the hbase pre-upgrade validate-cp commands to check that your co-processors are compatible with the upgrade.

    Use the CDP parcel to run the pre-upgrade commands. Cloudera recommends that you run them on an HMaster host.

    For example, you can check for co-processor compatibility on master:
    $ /opt/cloudera/parcels/CDH-7.1.1-1.cdh7.1.1.p0.3224867/bin/hbase pre-upgrade validate-cp -jar /opt/cloudera/parcels/CDH-7.1.1-1.cdh7.1.1.p0.3224867/jars/ -config
    Or, you can validate every table level co-processors where the table name matches to the .* regular expression:
    $ /opt/cloudera/parcels/CDH-7.1.1-1.cdh7.1.1.p0.3224867/bin/hbase pre-upgrade validate-cp -table .*
  3. Check the Yes, I have manually upgraded the HBase co-processor classes upgrade checkbox.

Continue the upgrade using the Cloudera Manager upgrade wizard.