Examples of org.apache.hadoop.hbase.InterProcessLock.tryAcquire()

Class org.apache.hadoop.hbase.InterProcessLock

Examples of org.apache.hadoop.hbase.InterProcessLock.tryAcquire()

org.apache.hadoop.hbase.InterProcessLock.tryAcquire()
Acquire the lock within a wait time. @param timeoutMs The maximum time (in milliseconds) to wait for the lock,-1 to wait indefinitely @return True if the lock was acquired, false if waiting time elapsedbefore the lock was acquired @throws IOException If there is an unrecoverable error talking talking(e.g., when talking to a lock service) when acquiring the lock @throws InterruptedException If the thread is interrupted while waiting toacquire the lock

    lock1.acquire();


    //try to acquire, but it will timeout. We are testing whether this will cause any problems
    //due to the read lock being from another client
    InterProcessLock lock2 = clientLock2.writeLock(Bytes.toBytes("client2"));
    assertFalse(lock2.tryAcquire(1000));


    lock1.release();


    //this time it will acquire
    assertTrue(lock2.tryAcquire(5000));

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    assertFalse(lock2.tryAcquire(1000));


    lock1.release();


    //this time it will acquire
    assertTrue(lock2.tryAcquire(5000));
    lock2.release();
    zkWatcher1.close();
    zkWatcher2.close();
  }
}

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    lock1.acquire();


    //try to acquire, but it will timeout. We are testing whether this will cause any problems
    //due to the read lock being from another client
    InterProcessLock lock2 = clientLock2.writeLock(Bytes.toBytes("client2"));
    assertFalse(lock2.tryAcquire(1000));


    lock1.release();


    //this time it will acquire
    assertTrue(lock2.tryAcquire(5000));

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    assertFalse(lock2.tryAcquire(1000));


    lock1.release();


    //this time it will acquire
    assertTrue(lock2.tryAcquire(5000));
    lock2.release();
    zkWatcher1.close();
    zkWatcher2.close();
  }
}

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    lock1.acquire();


    //try to acquire, but it will timeout. We are testing whether this will cause any problems
    //due to the read lock being from another client
    InterProcessLock lock2 = clientLock2.writeLock(Bytes.toBytes("client2"));
    assertFalse(lock2.tryAcquire(1000));


    lock1.release();


    //this time it will acquire
    assertTrue(lock2.tryAcquire(5000));

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    assertFalse(lock2.tryAcquire(1000));


    lock1.release();


    //this time it will acquire
    assertTrue(lock2.tryAcquire(5000));
    lock2.release();
    zkWatcher1.close();
    zkWatcher2.close();
  }
}

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