[KUDU-3346] Rebalance fails when trying to decommission tserver on a rack-aware cluster

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.15.0
• Fix Version/s: 1.16.0
• Assignee: YifanZhang
• Reporter: Georgiana Ogrean
• Created: 24/Dec/21 00:06
• Updated: 05/Jan/22 06:56
• Resolved: 05/Jan/22 06:56

Description

When following the steps in the docs for decommissioning a tserver, the rebalance job fails with:

Invalid argument: ignored tserver <tserver_uuid> is not reported among know tservers 

Steps followed:
1. Checked that ksck passes.
2. Put the tserver to be decommissioned in maintenance mode.

sudo -u kudu kudu tserver state enter_maintenance $MASTER_ADDRESSES 5ae499b1b870419daabb0e8da90ef233 

3. Ran rebalance with -ignored_tservers and -move_replicas_from_ignored_tservers flags.

sudo -u kudu kudu cluster rebalance $MASTER_ADDRESSES -move_replicas_from_ignored_tservers -ignored_tservers=5ae499b1b870419daabb0e8da90ef233 -v=1

The logs for the rebalace command are attached.