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From "Jeff Jirsa (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-12296) system_auth can't be rebuilt by default
Date Thu, 13 Oct 2016 05:16:20 GMT


Jeff Jirsa commented on CASSANDRA-12296:

you still get an incorrect error message if you try and rebuild from the same DC using NTS
from a DC that doesn't contain the keyspace. When I was testing this case apparently the error
got masked by another keyspace which makes me think there may be another bug here 

Glad you found a way to trigger it with NTS (good work there). Would personally vote for a
more generic error rather than multiple different error messages for each possible failure
situation. [~brandon.williams] - you deal with a lot of end users, are you good with what
he proposed ( {{Ensure this keyspace has replicas in the source datacentre}} )? 

> system_auth can't be rebuilt by default
> ---------------------------------------
>                 Key: CASSANDRA-12296
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Jim Witschey
>            Priority: Minor
>              Labels: lhf
>         Attachments: 12296.patch
> This came up in discussion of CASSANDRA-11687. {{nodetool rebuild}} was failing in a
dtest. [~pauloricardomg] explained:
> bq. before [CASSANDRA-11848] the local node could be considered a source, while now sources
are restricted only to dc2, so since {{system_auth}} uses {{SimpleStrategy}} depending on
the token arrangement there could or not be sources from dc2. Fix is to either use {{-Dcassandra.consistent.rangemovement=false}}
or update {{system_auth}} to use {{NetworkTopologyStrategy}} with 2 dcs..
> This is, at the very least, a UX bug. When {{rebuild}} fails, it fails with
> {code}
> nodetool: Unable to find sufficient sources for streaming range (-3287869951390391138,-1624006824486474209]
in keyspace system_auth with RF=1.If you want to ignore this, consider using system property
> {code}
> which suggests that a user should give up consistency guarantees when it's not necessary.

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