When using remote partitioning, each slave worker persists it's current
status in the same job repsository that the master uses. Because of
this, there is no hard need for the master to wait for each worker to
send a formal response once it's work is complete. Instead, the master
(at the cost of polling a db periodically) can determine if the workers
are done by looking up each partition's status in the job repository.
This commit removes the requirement for a reply channel and implements
the polling of the job repository to determine if the workers are done.
BATCH-2332
The AsyncItemWriter is used in conjunction with the AsyncItemProcessor
to unwrap the Futures that are returned by that processor.
Traditionally when an ItemProcessor returns null, it's considered having
been filtered out and should not be passed to the ItemWriter. In this
case, the AsyncItemWriter was not checking for nulls so they were being
passed to the delegate ItemWriter. Most of the OOTB ItemWriters do not
perform a null check prior to doing the write so they were throwing NPEs
when using this paradigm.
* Use Gradle 1.11
* Remove SpringSource references
* Update JavaDoc overview
* Update Jacoco conf + Add license/manifest files
* Addresses also BATCH-2187
* Update a number of unit tests to not be ignored
Jira: https://jira.springsource.org/browse/BATCH-2144
* Removed APT files
* General formatting and spelling fixes
* Converted README.md to docbook
* Expanded converted README.md docs to include usable code snippets
* What's new
* JSR-352
* Convert Spring Batch Integration apt files into docbook and use as chapter
* Remove site dir from Spring Batch Integration where converted apt files used
to live
* Upgrade Spring framework to 4.0.2.RELEASE
* Upgrade maven compiler plugin to 3.1
* Use LinkedHashMap to preseve ordering in AbstractFlowParser (found when upgrading to JDK 8)
* Match on EnhancerBySpringCGLIB in StepScopeProxyTargetClassOverrideIntegrationTests (SPR-11398)
Also changes for deprecation of interval-trigger on poller.
BATCHADM-125 Polishing (garyrussell)
Revert spaces to tabs; fix up some inconsistent newlines.
RemoteChunkFaultTolerantStepJdbcIntegrationTests-context.xml
FileDropJobIntegrationTests-context.xml
AbstractIntegrationViewTests-context.xml
VanillaIntegrationTests-context.xml
RepeatTransactionalPollingIntegrationTests-context.xml
RetryRepeatTransactionalPollingIntegrationTests-context.xml
TransactionalPollingIntegrationTests-context.xml
RetryTransactionalPollingIntegrationTests-context.xml
