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From "Alexey Goncharuk (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-2645) Assertion error in ATOMIC cachce for invokeAll and cache store
Date Fri, 12 Feb 2016 14:42:18 GMT
Alexey Goncharuk created IGNITE-2645:

             Summary: Assertion error in ATOMIC cachce for invokeAll and cache store
                 Key: IGNITE-2645
                 URL: https://issues.apache.org/jira/browse/IGNITE-2645
             Project: Ignite
          Issue Type: Bug
          Components: cache
    Affects Versions: ignite-1.4
            Reporter: Alexey Goncharuk

Assertion happens under the following conditions:
 * Cache is empty
 * Cache store contains non-null values for some keys
 * invokeAll is invoked for those keys

Update version is generated when update request reaches the primary node. Then, we need to
read-through stored values (the cache is empty) and pass them to transformers. Since read-through
changes entry version, subsequent update fails with an assertion because read-through version
is generated later than update version.

The scenario when a read-through is implemented via a separate loop with innerGet() is possible
only with invokeAll() because this is the only multi-key cache operation that requires the
previous entry value.

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