Examples with LoggerTooFarBehindException org.apache.hadoop.hdfs.qjournal.client.LoggerTooFarBehindException used on opensource projects

Example 1 with LoggerTooFarBehindException

use of org.apache.hadoop.hdfs.qjournal.client.LoggerTooFarBehindException in project hadoop by apache.

the class TestIPCLoggerChannel method testQueueLimiting.

/**
   * Test that, once the queue eclipses the configure size limit,
   * calls to journal more data are rejected.
   */
@Test
public void testQueueLimiting() throws Exception {
    // Block the underlying fake proxy from actually completing any calls.
    DelayAnswer delayer = new DelayAnswer(LOG);
    Mockito.doAnswer(delayer).when(mockProxy).journal(Mockito.<RequestInfo>any(), Mockito.eq(1L), Mockito.eq(1L), Mockito.eq(1), Mockito.same(FAKE_DATA));
    // Queue up the maximum number of calls.
    int numToQueue = LIMIT_QUEUE_SIZE_BYTES / FAKE_DATA.length;
    for (int i = 1; i <= numToQueue; i++) {
        ch.sendEdits(1L, (long) i, 1, FAKE_DATA);
    }
    // The accounting should show the correct total number queued.
    assertEquals(LIMIT_QUEUE_SIZE_BYTES, ch.getQueuedEditsSize());
    // Trying to queue any more should fail.
    try {
        ch.sendEdits(1L, numToQueue + 1, 1, FAKE_DATA).get(1, TimeUnit.SECONDS);
        fail("Did not fail to queue more calls after queue was full");
    } catch (ExecutionException ee) {
        if (!(ee.getCause() instanceof LoggerTooFarBehindException)) {
            throw ee;
        }
    }
    delayer.proceed();
    // After we allow it to proceeed, it should chug through the original queue
    GenericTestUtils.waitFor(new Supplier<Boolean>() {

        @Override
        public Boolean get() {
            return ch.getQueuedEditsSize() == 0;
        }
    }, 10, 1000);
}