Michał Michalski created CASSANDRA-5302:
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Summary: Fix nodetool ring and status output format for IPv6
addresses
Key: CASSANDRA-5302
URL: https://issues.apache.org/jira/browse/CASSANDRA-5302
Project: Cassandra
Issue Type: Improvement
Components: Tools
Reporter: Michał Michalski
Assignee: Michał Michalski
Priority: Trivial
My pedantic nature can't stand having unaligned columns in nodetool outputs,
which happens when IP addresses are IPv6 ones:
{noformat}michal@aperture:~/workspace/cassandra-dev$ ./bin/nodetool -h
cssa01-04.oslo.osa status
Datacenter: DC1
==================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Owns (effective) Host ID
Token Rack
UN 2001:3c27:21:166:0:1:2:7 331.65 GB 100,0%
d557fb83-72f2-4e92-9f26-de6c788aada5 85070591730234615865843651857942052864
rack2
UN 2001:3c27:21:166:0:1:1:7 328.8 GB 100,0%
0461a4bf-97a6-447d-9d06-3b42ad1f702c 0
rack1
{noformat}
I'm attaching a patch that fixes this problem for nodetool status / ring
commands. It does it by picking first item in nodes list (for nodetool ring
it's first node in general, for nodetool status it's first node in each DC) and
uses its length as a field length for output.
It bases on assumptions that it's imppossible to have 0 nodes in cluster/DC and
the lenghts of addresses are equal. Let me know if there's the case when it's
not valid.
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