Saranya Krishnakumar created CASSANDRA-17870:
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Summary: nodetool/rebuild: C* rebuilds from local (new dc) dc
nodes if src-dc is not passed
Key: CASSANDRA-17870
URL: https://issues.apache.org/jira/browse/CASSANDRA-17870
Project: Cassandra
Issue Type: Improvement
Reporter: Saranya Krishnakumar
Assignee: Saranya Krishnakumar
During expansion by Dc, when we issue nodetool/rebuild from new dc to rebuild
the data from other DCs. If src-dc is not passed explicitly, then C* tries to
rebuild the data from the same (new dc) dc.
We don’t exclude other nodes in the same DC. Only down sources and the local
node itself are excluded.
```
// We're _always_ filtering out a local node and down sources
addSourceFilter(new
RangeStreamer.FailureDetectorSourceFilter(failureDetector));
addSourceFilter(new RangeStreamer.ExcludeLocalNodeFilter());
```
We should fix nodetool/rebuild to exclude the local DC (from where we’re
executing the command) while issuing nodetool/rebuild without passing src dc
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