Andreas Neumann created TEPHRA-244:
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Summary: Invalid tx pruning does not handle deletion of tables well
Key: TEPHRA-244
URL: https://issues.apache.org/jira/browse/TEPHRA-244
Project: Tephra
Issue Type: Bug
Components: core, manager
Affects Versions: 0.12.0-incubating
Reporter: Andreas Neumann
Assignee: Andreas Neumann
Fix For: 0.13.0-incubating
Suppose an application regularly creates and deletes tables (for example,
temporary tables). In such a scenario, there will always be such a temporary
table when pruning runs, and its regions will be recorded for that time.
However, the region will be deleted before it ever compacts or flushes, and it
will never record prune information. Because all prune times have such regions,
there will never be a set of transactional regions that all have prune info,
and pruning will never happen.
The fix is to exclude deleted tables from the list of regions at each time.
This is all regions of deleted tables (tables that do not exist any more), not
deleted regions: a region may disappear due to a split and its data will be in
new regions.
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