[jira] [Created] (IGNITE-18165) Apply short term loks to sorted indexes

["Vladislav Pyatkov (Jira)" <ji...@apache.org>]

Vladislav Pyatkov created IGNITE-18165:
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             Summary: Apply short term loks to sorted indexes
                 Key: IGNITE-18165
                 URL: https://issues.apache.org/jira/browse/IGNITE-18165
             Project: Ignite
          Issue Type: Improvement
            Reporter: Vladislav Pyatkov


*Motivation:*
Transaction isolation requires using short term locks in insert operation over sorted indexes. It was not implemented because short term locks had not supported.

*Implementation notes:*
According to the transaction protocol IEP [1] insert operation in RW transactions for sortex index looks as follows:

Unique index:
// insert
IX_short(nextKey) // released after the insertion
X_commit(currentKey) // acquired before releasing IX_short

Non-unique index:
// insert
IX_short(nextKey)
X_commit(currentKey) if nextKey previously locked in S, X or SIX mode
IX_commit(currentKey) otherwise

[1] https://cwiki.apache.org/confluence/display/IGNITE/IEP-91%3A+Transaction+protocol



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