Michael Russo created USERGRID-1270:
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Summary: Enhance shard compaction to track the 'end' of a shard's
valid Edges
Key: USERGRID-1270
URL: https://issues.apache.org/jira/browse/USERGRID-1270
Project: Usergrid
Issue Type: Story
Reporter: Michael Russo
Assignee: Michael Russo
During the shard compaction process, columns (edges) are moved from a source
shard (row) to a target shard to balance the size against the configured shard
size in Usergrid.
This causes tombstones to be created and can make seeks slower or potentially
cause timeout exceptions in Astyanax if the tombstone overwhelming exception
from Cassandra is thrown.
Implement the ability to 'mark' a shard's last valid edge so that can be fed
into the range scan when retrieving the row (shard).
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