Josh Snyder created CASSANDRA-15433:
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Summary: Pending ranges are not recalculated on keyspace creation
Key: CASSANDRA-15433
URL: https://issues.apache.org/jira/browse/CASSANDRA-15433
Project: Cassandra
Issue Type: Bug
Reporter: Josh Snyder
When a node begins bootstrapping, Cassandra recalculates pending tokens for
each keyspace that exists when the state change is observed (in
StorageService:handleState*). When new keyspaces are created, we do not
recalculate pending ranges (around Schema:merge). As a result, writes for new
keyspaces are not received by nodes in BOOT or BOOT_REPLACE modes. When
bootstrapping finishes, the node which just bootstrapped will not have data for
the newly created keyspace.
Consider a ring with bootstrapped nodes A, B, and C. Node D is pending, and
when it finishes bootstrapping, C will cede ownership of some ranges to D. A
quorum write is acknowledged by C and A. B missed the write, and the
coordinator didn't send it to D at all. When D finishes bootstrapping, the
quorum B+D will not contain the mutation.
Steps to reproduce:
# Join a node in BOOT mode
# Create a keyspace
# Send writes to that keyspace
# On the joining node, observe that {{nodetool cfstats}} records zero writes to
the new keyspace
I have observed this directly in Cassandra 3.0, and based on my reading the
code, I believe it affects up through trunk.
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