[CASSANDRA-673] bootstrapping does not work properly using multiple key space

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 0.5

Environment

1. cluster has at least one empty key-space
2. one node be added into cluster to do bootstrap

• Severity: Low
• Assignee: Jaakko Laine
• Reporter: Michael Lee

Authors

Jaakko Laine

• Created: 06/Jan/10 03:14
• Updated: 16/Apr/19 09:33
• Resolved: 18/Jan/10 18:35

Description

when use multiple key-spaces, and one key-space has no SSTable, then bootstrap may not work right.
Say nodes A, B, C, D have key spaces "KS1" and "KS2", KS1 is empty, now add empty node E into cluster.
Suppose E decide to drag data from A and B(bootstrap source), E will send range to A and B, and A, B will scan all key-spaces they got and send ack to E, which contains list of key-space name(StreamContextManager.StreamContext),
when E get ack from A and B, it scan this list, but when encounter first empty key-space, it will stop and remove node from bootstrap sources list:

StreamInitiateVerbHandler.doVerb:
......
if (streamContexts.length == 0 && StorageService.instance().isBootstrapMode())

{ if (logger.isDebugEnabled()) logger.debug("no data needed from " + message.getFrom()); StorageService.instance().removeBootstrapSource(message.getFrom()); return; }

......
If list of bootstrap sources is empty, E will finish bootstrapping

So, the result is: E get nothing from source A, B, even KS2 has lots of data.