Gargi Jaiswal created HDDS-14662:
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Summary: Container Balancer does not validate include/exclude
datanode names
Key: HDDS-14662
URL: https://issues.apache.org/jira/browse/HDDS-14662
Project: Apache Ozone
Issue Type: Improvement
Reporter: Gargi Jaiswal
Assignee: Sravani Revuri
The {color:#de350b}ozone admin containerbalancer start{color} command accepts
invalid datanode names in *--include-datanodes* and *--exclude-datanodes* and
reports success instead of failing with a validation error. This differs from
other admin commands that validate hostnames and fail on invalid input.
{code:java}
bash-5.1$ ozone admin containerbalancer start --exclude-datanodes "55abc" -t
0.1 -d 100 -i 3
Container Balancer started successfully.
bash-5.1$ ozone admin containerbalancer start --include-datanodes="123!"
Container Balancer started successfully.
// other admin commands behavior
bash-5.1$ ozone admin datanode decommission ozone-datanode-1
Started decommissioning datanode(s):
ozone-datanode-1
Error: ozone-datanode-1: ozone-datanode-1: Name or service not known
Some nodes could not enter the decommission workflow
bash-5.1$ ozone admin datanode diskbalancer status ozone-datanode-3 555hgkjmdhkj
Error on node [555hgkjmdhkj]: Invalid host name: local host is:
"ca8e95ea2b71/172.18.0.2"; destination host is: "555hgkjmdhkj":19864;
java.net.UnknownHostException: Invalid host name: local host is:
"ca8e95ea2b71/172.18.0.2"; destination host is: "555hgkjmdhkj":19864;
java.net.UnknownHostException; For more details see:
http://wiki.apache.org/hadoop/UnknownHost; For more details see:
http://wiki.apache.org/hadoop/UnknownHost
Failed to get DiskBalancer status from nodes: [555hgkjmdhkj]
Status result:
Datanode Status Threshold(%) BandwidthInMB Threads
StopAfterDiskEven SuccessMove FailureMove BytesMoved(MB) EstBytesToMove(MB)
EstTimeLeft(min)
9e2ef66785cc STOPPED 10.0000 10 5 true 0
0 0 0 0{code}
h3. *Proposed Fix*
Add validation for --include-datanodes and --exclude-datanodes before starting
the balancer.
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