Examples with MutableBoolean org.apache.commons.lang.mutable.MutableBoolean used on opensource projects

Example 1 with MutableBoolean

use of org.apache.commons.lang.mutable.MutableBoolean in project hadoop by apache.

the class TestShortCircuitCache method testEviction.

@Test(timeout = 60000)
public void testEviction() throws Exception {
    final ShortCircuitCache cache = new ShortCircuitCache(2, 10000000, 1, 10000000, 1, 10000, 0);
    final TestFileDescriptorPair[] pairs = new TestFileDescriptorPair[] { new TestFileDescriptorPair(), new TestFileDescriptorPair(), new TestFileDescriptorPair() };
    ShortCircuitReplicaInfo[] replicaInfos = new ShortCircuitReplicaInfo[] { null, null, null };
    for (int i = 0; i < pairs.length; i++) {
        replicaInfos[i] = cache.fetchOrCreate(new ExtendedBlockId(i, "test_bp1"), new SimpleReplicaCreator(i, cache, pairs[i]));
        Preconditions.checkNotNull(replicaInfos[i].getReplica());
        Preconditions.checkState(replicaInfos[i].getInvalidTokenException() == null);
        pairs[i].compareWith(replicaInfos[i].getReplica().getDataStream(), replicaInfos[i].getReplica().getMetaStream());
    }
    // Let's close them all.
    for (int i = 0; i < pairs.length; i++) {
        replicaInfos[i].getReplica().unref();
    }
    // The last two replicas should still be cached.
    for (int i = 1; i < pairs.length; i++) {
        final Integer iVal = i;
        replicaInfos[i] = cache.fetchOrCreate(new ExtendedBlockId(i, "test_bp1"), new ShortCircuitReplicaCreator() {

            @Override
            public ShortCircuitReplicaInfo createShortCircuitReplicaInfo() {
                Assert.fail("expected to use existing entry for " + iVal);
                return null;
            }
        });
        Preconditions.checkNotNull(replicaInfos[i].getReplica());
        Preconditions.checkState(replicaInfos[i].getInvalidTokenException() == null);
        pairs[i].compareWith(replicaInfos[i].getReplica().getDataStream(), replicaInfos[i].getReplica().getMetaStream());
    }
    // The first (oldest) replica should not be cached.
    final MutableBoolean calledCreate = new MutableBoolean(false);
    replicaInfos[0] = cache.fetchOrCreate(new ExtendedBlockId(0, "test_bp1"), new ShortCircuitReplicaCreator() {

        @Override
        public ShortCircuitReplicaInfo createShortCircuitReplicaInfo() {
            calledCreate.setValue(true);
            return null;
        }
    });
    Preconditions.checkState(replicaInfos[0].getReplica() == null);
    Assert.assertTrue(calledCreate.isTrue());
    // Clean up
    for (int i = 1; i < pairs.length; i++) {
        replicaInfos[i].getReplica().unref();
    }
    for (int i = 0; i < pairs.length; i++) {
        pairs[i].close();
    }
    cache.close();
}

Example 2 with MutableBoolean

use of org.apache.commons.lang.mutable.MutableBoolean in project hadoop by apache.

the class TestShortCircuitCache method testAllocShm.

@Test(timeout = 60000)
public void testAllocShm() throws Exception {
    BlockReaderTestUtil.enableShortCircuitShmTracing();
    TemporarySocketDirectory sockDir = new TemporarySocketDirectory();
    Configuration conf = createShortCircuitConf("testAllocShm", sockDir);
    MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
    cluster.waitActive();
    DistributedFileSystem fs = cluster.getFileSystem();
    final ShortCircuitCache cache = fs.getClient().getClientContext().getShortCircuitCache();
    cache.getDfsClientShmManager().visit(new Visitor() {

        @Override
        public void visit(HashMap<DatanodeInfo, PerDatanodeVisitorInfo> info) throws IOException {
            // The ClientShmManager starts off empty
            Assert.assertEquals(0, info.size());
        }
    });
    DomainPeer peer = getDomainPeerToDn(conf);
    MutableBoolean usedPeer = new MutableBoolean(false);
    ExtendedBlockId blockId = new ExtendedBlockId(123, "xyz");
    final DatanodeInfo datanode = new DatanodeInfoBuilder().setNodeID(cluster.getDataNodes().get(0).getDatanodeId()).build();
    // Allocating the first shm slot requires using up a peer.
    Slot slot = cache.allocShmSlot(datanode, peer, usedPeer, blockId, "testAllocShm_client");
    Assert.assertNotNull(slot);
    Assert.assertTrue(usedPeer.booleanValue());
    cache.getDfsClientShmManager().visit(new Visitor() {

        @Override
        public void visit(HashMap<DatanodeInfo, PerDatanodeVisitorInfo> info) throws IOException {
            // The ClientShmManager starts off empty
            Assert.assertEquals(1, info.size());
            PerDatanodeVisitorInfo vinfo = info.get(datanode);
            Assert.assertFalse(vinfo.disabled);
            Assert.assertEquals(0, vinfo.full.size());
            Assert.assertEquals(1, vinfo.notFull.size());
        }
    });
    cache.scheduleSlotReleaser(slot);
    // Wait for the slot to be released, and the shared memory area to be
    // closed.  Since we didn't register this shared memory segment on the
    // server, it will also be a test of how well the server deals with
    // bogus client behavior.
    GenericTestUtils.waitFor(new Supplier<Boolean>() {

        @Override
        public Boolean get() {
            final MutableBoolean done = new MutableBoolean(false);
            try {
                cache.getDfsClientShmManager().visit(new Visitor() {

                    @Override
                    public void visit(HashMap<DatanodeInfo, PerDatanodeVisitorInfo> info) throws IOException {
                        done.setValue(info.get(datanode).full.isEmpty() && info.get(datanode).notFull.isEmpty());
                    }
                });
            } catch (IOException e) {
                LOG.error("error running visitor", e);
            }
            return done.booleanValue();
        }
    }, 10, 60000);
    cluster.shutdown();
    sockDir.close();
}

Example 3 with MutableBoolean

use of org.apache.commons.lang.mutable.MutableBoolean in project hadoop by apache.

the class TestShortCircuitCache method testUnlinkingReplicasInFileDescriptorCache.

/**
   * Test unlinking a file whose blocks we are caching in the DFSClient.
   * The DataNode will notify the DFSClient that the replica is stale via the
   * ShortCircuitShm.
   */
@Test(timeout = 60000)
public void testUnlinkingReplicasInFileDescriptorCache() throws Exception {
    BlockReaderTestUtil.enableShortCircuitShmTracing();
    TemporarySocketDirectory sockDir = new TemporarySocketDirectory();
    Configuration conf = createShortCircuitConf("testUnlinkingReplicasInFileDescriptorCache", sockDir);
    // We don't want the CacheCleaner to time out short-circuit shared memory
    // segments during the test, so set the timeout really high.
    conf.setLong(HdfsClientConfigKeys.Read.ShortCircuit.STREAMS_CACHE_EXPIRY_MS_KEY, 1000000000L);
    MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
    cluster.waitActive();
    DistributedFileSystem fs = cluster.getFileSystem();
    final ShortCircuitCache cache = fs.getClient().getClientContext().getShortCircuitCache();
    cache.getDfsClientShmManager().visit(new Visitor() {

        @Override
        public void visit(HashMap<DatanodeInfo, PerDatanodeVisitorInfo> info) throws IOException {
            // The ClientShmManager starts off empty.
            Assert.assertEquals(0, info.size());
        }
    });
    final Path TEST_PATH = new Path("/test_file");
    final int TEST_FILE_LEN = 8193;
    final int SEED = 0xFADE0;
    DFSTestUtil.createFile(fs, TEST_PATH, TEST_FILE_LEN, (short) 1, SEED);
    byte[] contents = DFSTestUtil.readFileBuffer(fs, TEST_PATH);
    byte[] expected = DFSTestUtil.calculateFileContentsFromSeed(SEED, TEST_FILE_LEN);
    Assert.assertTrue(Arrays.equals(contents, expected));
    // Loading this file brought the ShortCircuitReplica into our local
    // replica cache.
    final DatanodeInfo datanode = new DatanodeInfoBuilder().setNodeID(cluster.getDataNodes().get(0).getDatanodeId()).build();
    cache.getDfsClientShmManager().visit(new Visitor() {

        @Override
        public void visit(HashMap<DatanodeInfo, PerDatanodeVisitorInfo> info) throws IOException {
            Assert.assertTrue(info.get(datanode).full.isEmpty());
            Assert.assertFalse(info.get(datanode).disabled);
            Assert.assertEquals(1, info.get(datanode).notFull.values().size());
            DfsClientShm shm = info.get(datanode).notFull.values().iterator().next();
            Assert.assertFalse(shm.isDisconnected());
        }
    });
    // Remove the file whose blocks we just read.
    fs.delete(TEST_PATH, false);
    // Wait for the replica to be purged from the DFSClient's cache.
    GenericTestUtils.waitFor(new Supplier<Boolean>() {

        MutableBoolean done = new MutableBoolean(true);

        @Override
        public Boolean get() {
            try {
                done.setValue(true);
                cache.getDfsClientShmManager().visit(new Visitor() {

                    @Override
                    public void visit(HashMap<DatanodeInfo, PerDatanodeVisitorInfo> info) throws IOException {
                        Assert.assertTrue(info.get(datanode).full.isEmpty());
                        Assert.assertFalse(info.get(datanode).disabled);
                        Assert.assertEquals(1, info.get(datanode).notFull.values().size());
                        DfsClientShm shm = info.get(datanode).notFull.values().iterator().next();
                        // Check that all slots have been invalidated.
                        for (Iterator<Slot> iter = shm.slotIterator(); iter.hasNext(); ) {
                            Slot slot = iter.next();
                            if (slot.isValid()) {
                                done.setValue(false);
                            }
                        }
                    }
                });
            } catch (IOException e) {
                LOG.error("error running visitor", e);
            }
            return done.booleanValue();
        }
    }, 10, 60000);
    cluster.shutdown();
    sockDir.close();
}

Example 4 with MutableBoolean

use of org.apache.commons.lang.mutable.MutableBoolean in project hadoop by apache.

the class BlockReaderFactory method createShortCircuitReplicaInfo.

/**
   * Fetch a pair of short-circuit block descriptors from a local DataNode.
   *
   * @return    Null if we could not communicate with the datanode,
   *            a new ShortCircuitReplicaInfo object otherwise.
   *            ShortCircuitReplicaInfo objects may contain either an
   *            InvalidToken exception, or a ShortCircuitReplica object ready to
   *            use.
   */
@Override
public ShortCircuitReplicaInfo createShortCircuitReplicaInfo() {
    if (createShortCircuitReplicaInfoCallback != null) {
        ShortCircuitReplicaInfo info = createShortCircuitReplicaInfoCallback.createShortCircuitReplicaInfo();
        if (info != null)
            return info;
    }
    LOG.trace("{}: trying to create ShortCircuitReplicaInfo.", this);
    BlockReaderPeer curPeer;
    while (true) {
        curPeer = nextDomainPeer();
        if (curPeer == null)
            break;
        if (curPeer.fromCache)
            remainingCacheTries--;
        DomainPeer peer = (DomainPeer) curPeer.peer;
        Slot slot = null;
        ShortCircuitCache cache = clientContext.getShortCircuitCache();
        try {
            MutableBoolean usedPeer = new MutableBoolean(false);
            slot = cache.allocShmSlot(datanode, peer, usedPeer, new ExtendedBlockId(block.getBlockId(), block.getBlockPoolId()), clientName);
            if (usedPeer.booleanValue()) {
                LOG.trace("{}: allocShmSlot used up our previous socket {}.  " + "Allocating a new one...", this, peer.getDomainSocket());
                curPeer = nextDomainPeer();
                if (curPeer == null)
                    break;
                peer = (DomainPeer) curPeer.peer;
            }
            ShortCircuitReplicaInfo info = requestFileDescriptors(peer, slot);
            clientContext.getPeerCache().put(datanode, peer);
            return info;
        } catch (IOException e) {
            if (slot != null) {
                cache.freeSlot(slot);
            }
            if (curPeer.fromCache) {
                // Handle an I/O error we got when using a cached socket.
                // These are considered less serious, because the socket may be stale.
                LOG.debug("{}: closing stale domain peer {}", this, peer, e);
                IOUtilsClient.cleanup(LOG, peer);
            } else {
                // Handle an I/O error we got when using a newly created socket.
                // We temporarily disable the domain socket path for a few minutes in
                // this case, to prevent wasting more time on it.
                LOG.warn(this + ": I/O error requesting file descriptors.  " + "Disabling domain socket " + peer.getDomainSocket(), e);
                IOUtilsClient.cleanup(LOG, peer);
                clientContext.getDomainSocketFactory().disableDomainSocketPath(pathInfo.getPath());
                return null;
            }
        }
    }
    return null;
}

Example 5 with MutableBoolean

use of org.apache.commons.lang.mutable.MutableBoolean in project hbase by apache.

the class PreemptiveFastFailInterceptor method shouldRetryInspiteOfFastFail.

/**
   * Check to see if the client should try to connnect to the server, inspite of
   * knowing that it is in the fast fail mode.
   *
   * The idea here is that we want just one client thread to be actively trying
   * to reconnect, while all the other threads trying to reach the server will
   * short circuit.
   *
   * @param fInfo
   * @return true if the client should try to connect to the server.
   */
protected boolean shouldRetryInspiteOfFastFail(FailureInfo fInfo) {
    // and not throw an exception.
    if (fInfo != null && fInfo.exclusivelyRetringInspiteOfFastFail.compareAndSet(false, true)) {
        MutableBoolean threadAlreadyInFF = this.threadRetryingInFastFailMode.get();
        if (threadAlreadyInFF == null) {
            threadAlreadyInFF = new MutableBoolean();
            this.threadRetryingInFastFailMode.set(threadAlreadyInFF);
        }
        threadAlreadyInFF.setValue(true);
        return true;
    } else {
        return false;
    }
}