Keith Turner created ACCUMULO-549:
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Summary: Create infrastructure that supports debugging.
Key: ACCUMULO-549
URL: https://issues.apache.org/jira/browse/ACCUMULO-549
Project: Accumulo
Issue Type: New Feature
Reporter: Keith Turner
Fix For: 1.5.0
Before a release an extensive amount of testing is done that usually involves
running test like continuous ingest and random walk on a cluster for extended
periods of time. When bugs are found by these test it can take a lot of time
to track the issue down sometimes. Inorder to make tracking these issues down
easier the write ahead logs are archived. These walogs archives make it
possible to answer questions about a tablets history because everything ever
written to the metadata table is there. It would be nice to always have this
capability on an accumulo system, and have it be easy to use. Spelunking
around in the write ahead logs is not an easy task.
It would be nice if accumulo could answer questions like the following.
* Where has a tablet been assigned
* What compactions has a tablet done
* What split or merge created a tablet
These questions can currently be answered with walogs and log4j logs, but its
painful.
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