[jira] [Created] (IGNITE-4933) Need to add an option to write all updates in write-behind store

[Valentin Kulichenko (JIRA)]

Valentin Kulichenko created IGNITE-4933:
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             Summary: Need to add an option to write all updates in 
write-behind store
                 Key: IGNITE-4933
                 URL: https://issues.apache.org/jira/browse/IGNITE-4933
             Project: Ignite
          Issue Type: Improvement
          Components: cache
    Affects Versions: 1.9
            Reporter: Valentin Kulichenko
             Fix For: 2.0


Currently if there are several updates for the same key, write behind store 
will write only one of them within a single batch. I.e. second update will 
override the first one if the latter is not written to DB yet.

This is good from performance and memory consumption standpoint, however 
sometimes it's required to write all updates that happen in cache.

We can add parameter to {{CacheConfiguration}} that will switch this behavior 
and implement it in {{GridCacheWriteBehindStore}}. Default behavior should 
remain the same.



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