Example usage for java.util.concurrent RunnableFuture cancel

Introduction

In this page you can find the example usage for java.util.concurrent RunnableFuture cancel.

Prototype

boolean cancel(boolean mayInterruptIfRunning);

Source Link

Document

Attempts to cancel execution of this task.

Usage

From source file:org.apache.flink.contrib.streaming.state.RocksDBStateBackendTest.java

@Test
public void testReleasingSnapshotAfterBackendClosed() throws Exception {
    setupRocksKeyedStateBackend();/*from   ww w  .ja  va 2s  .  c o  m*/
    RunnableFuture<KeyGroupsStateHandle> snapshot = keyedStateBackend.snapshot(0L, 0L, testStreamFactory,
            CheckpointOptions.forFullCheckpoint());

    RocksDB spyDB = keyedStateBackend.db;

    verify(spyDB, times(1)).getSnapshot();
    verify(spyDB, times(0)).releaseSnapshot(any(Snapshot.class));

    this.keyedStateBackend.dispose();
    verify(spyDB, times(1)).close();
    assertEquals(null, keyedStateBackend.db);

    //Ensure every RocksObjects not closed yet
    for (RocksObject rocksCloseable : allCreatedCloseables) {
        verify(rocksCloseable, times(0)).close();
    }

    snapshot.cancel(true);

    //Ensure every RocksObjects was closed exactly once
    for (RocksObject rocksCloseable : allCreatedCloseables) {
        verify(rocksCloseable, times(1)).close();
    }

}

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From source file:org.apache.flink.contrib.streaming.state.RocksDBStateBackendTest.java

@Test
public void testDismissingSnapshot() throws Exception {
    setupRocksKeyedStateBackend();//ww w.  ja  va  2s.com
    RunnableFuture<KeyGroupsStateHandle> snapshot = keyedStateBackend.snapshot(0L, 0L, testStreamFactory,
            CheckpointOptions.forFullCheckpoint());
    snapshot.cancel(true);
    verifyRocksObjectsReleased();
}

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From source file:org.apache.flink.contrib.streaming.state.RocksDBStateBackendTest.java

@Test
public void testDismissingSnapshotNotRunnable() throws Exception {
    setupRocksKeyedStateBackend();/*  ww w . ja v a 2 s  .c o  m*/
    RunnableFuture<KeyGroupsStateHandle> snapshot = keyedStateBackend.snapshot(0L, 0L, testStreamFactory,
            CheckpointOptions.forFullCheckpoint());
    snapshot.cancel(true);
    Thread asyncSnapshotThread = new Thread(snapshot);
    asyncSnapshotThread.start();
    try {
        snapshot.get();
        fail();
    } catch (Exception ignored) {

    }
    asyncSnapshotThread.join();
    verifyRocksObjectsReleased();
}

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From source file:org.apache.flink.contrib.streaming.state.RocksDBStateBackendTest.java

@Test
public void testCancelRunningSnapshot() throws Exception {
    setupRocksKeyedStateBackend();//from   w w  w.  j  ava  2  s  . c o  m
    RunnableFuture<KeyGroupsStateHandle> snapshot = keyedStateBackend.snapshot(0L, 0L, testStreamFactory,
            CheckpointOptions.forFullCheckpoint());
    Thread asyncSnapshotThread = new Thread(snapshot);
    asyncSnapshotThread.start();
    waiter.await(); // wait for snapshot to run
    waiter.reset();
    runStateUpdates();
    blocker.trigger(); // allow checkpointing to start writing
    snapshot.cancel(true);
    assertTrue(testStreamFactory.getLastCreatedStream().isClosed());
    waiter.await(); // wait for snapshot stream writing to run
    try {
        snapshot.get();
        fail();
    } catch (Exception ignored) {
    }

    verifyRocksObjectsReleased();
    asyncSnapshotThread.join();
}

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