Cached objects become inaccessible when new volumes are added to the cache.
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Key: TS-1050
URL: https://issues.apache.org/jira/browse/TS-1050
Project: Traffic Server
Issue Type: Bug
Components: Cache
Affects Versions: 3.1.1
Reporter: B Wyatt
During the investigation of TS-949 it came to light that even a consistent
hashing solution fails to maintain access for all objects in the cache when a
new volume is added. This is because a new volume will necessarily assume
ownership for some portion of the object/hash space. As a side effect of this
ownership change, new searches for previously cached objects may return the new
owner instead of the previous owner (which retained the cached copy).
According to the volume itself (and thus several aggregate statistics like
cache space usage), the objects are still valid and will remain as effective
dead weight until evicted during the normal cache operation.
See comments on TS-949 for initial discussion of possible solutions.
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