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https://issues.apache.org/jira/browse/IGNITE-5994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16119676#comment-16119676
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Yakov Zhdanov commented on IGNITE-5994:
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Currently {{invokeAsync()}} is defined as {{public <T> IgniteFuture<T>
invokeAsync(.....)}}.
If we need EntryProcessorResult to be returned from Future then it should be
{{public <T> IgniteFuture<EntryProcessorResult<T>> invokeAsync(.....)}}. I am
not sure why we have this difference in sync/async counterpart. Probably,
[~vozerov] or [~tledkov-gridgain] can provide some info.
I also think that we will not changing the public API in 2.0. Let's leave it as
is and then fix in next major version.
> IgniteInternalCache.invokeAsync().get() can return null
> -------------------------------------------------------
>
> Key: IGNITE-5994
> URL: https://issues.apache.org/jira/browse/IGNITE-5994
> Project: Ignite
> Issue Type: Bug
> Components: cache
> Affects Versions: 2.1
> Reporter: Alexander Menshikov
> Priority: Minor
> Labels: newbie
> Attachments: IgniteCacheSelfTest.java
>
>
> The IgniteInternalCache.invoke() always return an EntryProcessorResult, but
> the IgniteInternalCache.invokeAsync().get() can return the null in case when
> an EntryProcessor has returned the null.
> Code from reproducer:
> {noformat}
> final EntryProcessor<Object, Object, Object> ep = new EntryProcessor<Object,
> Object, Object>() {
> @Override
> public Object process(MutableEntry<Object, Object> entry,
> Object... objects) throws EntryProcessorException {
> return null;
> }
> };
> EntryProcessorResult<Object> result = utilCache.invoke("test", ep);
> assertNotNull(result);
> assertNull(result.get());
> result = utilCache.invokeAsync("test", ep).get();
> // Assert here!!!
> assertNotNull(result);
> assertNull(result.get());
> {noformat}
> It can be optimization. Nevertheless results of invoke() must be equals with
> results of invokeAsync().get(). So there are two options:
> 1) To do so would be the invokeAsync(key, ep).get() returned the null too for
> the optimization.
> 2) Or to do so would be the invoke(key, ep) returned an EntryProcessorResult
> for a logical consistency.
> NOTE: Don't confuse with IgniteCache.invoke.
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