Aaron McCurry created BLUR-105:
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Summary: Index Import rollback
Key: BLUR-105
URL: https://issues.apache.org/jira/browse/BLUR-105
Project: Apache Blur
Issue Type: Improvement
Affects Versions: 0.1.5, 0.1.6
Reporter: Aaron McCurry
Fix For: 0.1.6
During the index import (after a map reduce job) if there is an exception
thrown or a server shutdown the imported (and committed data from the MapReduce
job) could be lost. This is because instead of copying the segments from the
import directories into the main index. The index importer merely renames them
and the reason for this is to improve performance.
I suggest that we create a import logger to log what files have moved where so
that in the event that the import fails, the files that have been moved into
the main index and can be saved. I may need to create a diagram to illustrate
the potential problem.
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