Examples with LockComponent org.apache.hadoop.hive.metastore.api.LockComponent used on opensource projects

Example 66 with LockComponent

use of org.apache.hadoop.hive.metastore.api.LockComponent in project hive by apache.

the class TestTxnHandler method testLockDbLocksTable.

@Test
public void testLockDbLocksTable() throws Exception {
    // Test that locking a database prevents locking of tables in the database
    LockComponent comp = new LockComponent(LockType.EXCLUSIVE, LockLevel.DB, "mydb");
    comp.setOperationType(DataOperationType.NO_TXN);
    List<LockComponent> components = new ArrayList<LockComponent>(1);
    components.add(comp);
    LockRequest req = new LockRequest(components, "me", "localhost");
    LockResponse res = txnHandler.lock(req);
    assertTrue(res.getState() == LockState.ACQUIRED);
    comp = new LockComponent(LockType.EXCLUSIVE, LockLevel.DB, "mydb");
    comp.setOperationType(DataOperationType.NO_TXN);
    comp.setTablename("mytable");
    components.clear();
    components.add(comp);
    req = new LockRequest(components, "me", "localhost");
    res = txnHandler.lock(req);
    assertTrue(res.getState() == LockState.WAITING);
}

Example 67 with LockComponent

use of org.apache.hadoop.hive.metastore.api.LockComponent in project hive by apache.

the class TestTxnHandler method testLockESRSR.

@Test
public void testLockESRSR() throws Exception {
    // Test that exclusive lock blocks shared reads
    LockComponent comp = new LockComponent(LockType.EXCLUSIVE, LockLevel.DB, "mydb");
    comp.setTablename("mytable");
    comp.setPartitionname("mypartition");
    comp.setOperationType(DataOperationType.NO_TXN);
    List<LockComponent> components = new ArrayList<LockComponent>(1);
    components.add(comp);
    LockRequest req = new LockRequest(components, "me", "localhost");
    LockResponse res = txnHandler.lock(req);
    assertTrue(res.getState() == LockState.ACQUIRED);
    comp = new LockComponent(LockType.SHARED_READ, LockLevel.DB, "mydb");
    comp.setTablename("mytable");
    comp.setPartitionname("mypartition");
    comp.setOperationType(DataOperationType.INSERT);
    components.clear();
    components.add(comp);
    req = new LockRequest(components, "me", "localhost");
    res = txnHandler.lock(req);
    assertTrue(res.getState() == LockState.WAITING);
    comp = new LockComponent(LockType.SHARED_READ, LockLevel.DB, "mydb");
    comp.setTablename("mytable");
    comp.setPartitionname("mypartition");
    comp.setOperationType(DataOperationType.SELECT);
    components.clear();
    components.add(comp);
    req = new LockRequest(components, "me", "localhost");
    res = txnHandler.lock(req);
    assertTrue(res.getState() == LockState.WAITING);
}

Example 68 with LockComponent

use of org.apache.hadoop.hive.metastore.api.LockComponent in project hive by apache.

the class TestTxnHandler method testMultipleLock.

@Test
public void testMultipleLock() throws Exception {
    // Test more than one lock can be handled in a lock request
    LockComponent comp = new LockComponent(LockType.EXCLUSIVE, LockLevel.DB, "mydb");
    comp.setTablename("mytable");
    comp.setPartitionname("mypartition");
    comp.setOperationType(DataOperationType.NO_TXN);
    List<LockComponent> components = new ArrayList<LockComponent>(2);
    components.add(comp);
    comp = new LockComponent(LockType.EXCLUSIVE, LockLevel.DB, "mydb");
    comp.setTablename("mytable");
    comp.setPartitionname("anotherpartition");
    comp.setOperationType(DataOperationType.NO_TXN);
    components.add(comp);
    LockRequest req = new LockRequest(components, "me", "localhost");
    LockResponse res = txnHandler.lock(req);
    long lockid = res.getLockid();
    assertTrue(res.getState() == LockState.ACQUIRED);
    res = txnHandler.checkLock(new CheckLockRequest(lockid));
    assertTrue(res.getState() == LockState.ACQUIRED);
    txnHandler.unlock(new UnlockRequest(lockid));
    assertEquals(0, txnHandler.numLocksInLockTable());
}

Example 69 with LockComponent

use of org.apache.hadoop.hive.metastore.api.LockComponent in project hive by apache.

the class TestTxnHandler method testLockSameTable.

@Test
public void testLockSameTable() throws Exception {
    // Test that two different tables don't collide on their locks
    LockComponent comp = new LockComponent(LockType.EXCLUSIVE, LockLevel.DB, "mydb");
    comp.setTablename("mytable");
    comp.setOperationType(DataOperationType.NO_TXN);
    List<LockComponent> components = new ArrayList<LockComponent>(1);
    components.add(comp);
    LockRequest req = new LockRequest(components, "me", "localhost");
    LockResponse res = txnHandler.lock(req);
    assertTrue(res.getState() == LockState.ACQUIRED);
    comp = new LockComponent(LockType.EXCLUSIVE, LockLevel.DB, "mydb");
    comp.setTablename("mytable");
    comp.setOperationType(DataOperationType.NO_TXN);
    components.clear();
    components.add(comp);
    req = new LockRequest(components, "me", "localhost");
    res = txnHandler.lock(req);
    assertTrue(res.getState() == LockState.WAITING);
}

Example 70 with LockComponent

use of org.apache.hadoop.hive.metastore.api.LockComponent in project hive by apache.

the class TestTxnHandler method testMultipleLockWait.

@Test
public void testMultipleLockWait() throws Exception {
    // Test that two shared read locks can share a partition
    LockComponent comp = new LockComponent(LockType.EXCLUSIVE, LockLevel.DB, "mydb");
    comp.setTablename("mytable");
    comp.setPartitionname("mypartition");
    comp.setOperationType(DataOperationType.NO_TXN);
    List<LockComponent> components = new ArrayList<LockComponent>(2);
    components.add(comp);
    comp = new LockComponent(LockType.EXCLUSIVE, LockLevel.DB, "mydb");
    comp.setTablename("mytable");
    comp.setPartitionname("anotherpartition");
    comp.setOperationType(DataOperationType.NO_TXN);
    components.add(comp);
    LockRequest req = new LockRequest(components, "me", "localhost");
    LockResponse res = txnHandler.lock(req);
    long lockid1 = res.getLockid();
    assertTrue(res.getState() == LockState.ACQUIRED);
    comp = new LockComponent(LockType.EXCLUSIVE, LockLevel.DB, "mydb");
    comp.setTablename("mytable");
    comp.setPartitionname("mypartition");
    comp.setOperationType(DataOperationType.NO_TXN);
    components = new ArrayList<LockComponent>(1);
    components.add(comp);
    req = new LockRequest(components, "me", "localhost");
    res = txnHandler.lock(req);
    long lockid2 = res.getLockid();
    assertTrue(res.getState() == LockState.WAITING);
    txnHandler.unlock(new UnlockRequest(lockid1));
    res = txnHandler.checkLock(new CheckLockRequest(lockid2));
    assertTrue(res.getState() == LockState.ACQUIRED);
}