Github user lisakowen commented on a diff in the pull request: https://github.com/apache/incubator-hawq-docs/pull/97#discussion_r105307485 --- Diff: markdown/admin/ambari-admin.html.md.erb --- @@ -206,44 +208,22 @@ First ensure that the new node(s) has been configured per the instructions found 23. (Optional.) If you enabled temporary password-based authentication while preparing/configuring your HAWQ host systems, turn off password-based authentication as described in [Apache HAWQ System Requirements](../requirements/system-requirements.html#topic_pwdlessssh). -#### <a id="manual-config-steps"></a>Manually Updating the HAWQ Configuration -If you need to expand your HAWQ cluster without restarting the HAWQ service, follow these steps to manually apply the new HAWQ configuration. (Use these steps *instead* of following Step 7 in the above procedure.): +#### <a id="manual-config-steps"></a>Cluster Expansion Workaround +If you need to expand your HAWQ cluster without restarting the HAWQ service, follow this procedure to manually apply the HAWQ configuration changes required for this operation. (Perform these steps *instead of* following Step 9b in the above procedure.) -1. Update your configuration to use the new `default_hash_table_bucket_number` value that you calculated: - 1. SSH into the HAWQ master host as the `gpadmin` user: - ```shell - $ ssh gpadmin@<HAWQ_MASTER_HOST> - ``` - 2. Source the `greenplum_path.sh` file to update the shell environment: - ```shell - $ source /usr/local/hawq/greenplum_path.sh - ``` - 3. Verify the current value of `default_hash_table_bucket_number`: - ```shell - $ hawq config -s default_hash_table_bucket_number - ``` - 4. Update `default_hash_table_bucket_number` to the new value that you calculated: - ```shell - $ hawq config -c default_hash_table_bucket_number -v <new_value> - ``` - 5. Reload the configuration without restarting the cluster: - ```shell - $ hawq stop cluster -u - ``` - 6. Verify that the `default_hash_table_bucket_number` value was updated: - ```shell - $ hawq config -s default_hash_table_bucket_number - ``` -2. Edit the `/usr/local/hawq/etc/slaves` file and add the new HAWQ hostname(s) to the end of the file. Separate multiple hosts with new lines. For example, after adding host4 and host5 to a cluster already contains hosts 1-3, the updated file contents would be: +1. Perform the procedure identified in [Updating HAWQ Configuration Without Cluster Restart](#manual-cfg-norestart) to update your configuration to use the new `default_hash_table_bucket_number` value that you calculated and set via the Ambari UI. You may skip Step 1 of this procedure. --- End diff -- yes, repeating the config steps in the workaround is much clearer for the user.
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