Alexey Goncharuk created IGNITE-3471:
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Summary: Do not send previous value to client node for invoke()
when possible
Key: IGNITE-3471
URL: https://issues.apache.org/jira/browse/IGNITE-3471
Project: Ignite
Issue Type: Task
Components: cache
Affects Versions: 1.4
Reporter: Alexey Goncharuk
Currently for invoke() or invokeAll() methods we send previous cache value to
near node and apply EntryProcessor locally to get a return value. This can
induce a significant overhead when cache value is much larger than entry
processor result.
For many cases this can be avoided, e.g.
{code}
try (tx = txStart()) {
cache.invoke(key, EP); // No need to send previous value to client in this
case.
tx.commit();
}
{code}
Note that we need to add additional handling of such a case:
{code}
try (tx = txStart()) {
cache.invoke(key, EP); // No need to send previous value to client in this
case.
cache.get(key); // This should actually get the current cache value from
primary node and apply an entry processor locally to get the updated value.
tx.commit();
}
{code}
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