Examples with TRIGGER_REBUILD_UPDATED org.neo4j.kernel.impl.api.index.sampling.IndexSamplingMode.TRIGGER_REBUILD_UPDATED used on opensource projects

Example 1 with TRIGGER_REBUILD_UPDATED

use of org.neo4j.kernel.impl.api.index.sampling.IndexSamplingMode.TRIGGER_REBUILD_UPDATED in project neo4j by neo4j.

the class IndexSamplingControllerTest method shouldNotStartOtherSamplingWhenSamplingAllTheIndexes.

@Test
public void shouldNotStartOtherSamplingWhenSamplingAllTheIndexes() {
    // given
    final AtomicInteger totalCount = new AtomicInteger(0);
    final AtomicInteger concurrentCount = new AtomicInteger(0);
    final DoubleLatch jobLatch = new DoubleLatch();
    final DoubleLatch testLatch = new DoubleLatch();
    IndexSamplingJobFactory jobFactory = (indexId, proxy) -> {
        if (!concurrentCount.compareAndSet(0, 1)) {
            throw new IllegalStateException("count !== 0 on create");
        }
        totalCount.incrementAndGet();
        jobLatch.waitForAllToStart();
        testLatch.startAndWaitForAllToStart();
        jobLatch.waitForAllToFinish();
        concurrentCount.decrementAndGet();
        testLatch.finish();
        return null;
    };
    final IndexSamplingController controller = new IndexSamplingController(samplingConfig, jobFactory, jobQueue, tracker, snapshotProvider, scheduler, always(true));
    when(tracker.canExecuteMoreSamplingJobs()).thenReturn(true);
    when(indexProxy.getState()).thenReturn(ONLINE);
    // when running once
    new Thread(runController(controller, TRIGGER_REBUILD_UPDATED)).start();
    jobLatch.startAndWaitForAllToStart();
    testLatch.waitForAllToStart();
    // then blocking on first job
    assertEquals(1, concurrentCount.get());
    // when running a second time
    controller.sampleIndexes(BACKGROUND_REBUILD_UPDATED);
    // then no concurrent job execution
    jobLatch.finish();
    testLatch.waitForAllToFinish();
    // and finally exactly one job has run to completion
    assertEquals(0, concurrentCount.get());
    assertEquals(1, totalCount.get());
}