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

Example 6 with CheckLockRequest

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

the class TestTxnHandler method testCheckLockAcquireAfterWaiting.

@Test
public void testCheckLockAcquireAfterWaiting() throws Exception {
    LockComponent comp = new LockComponent(LockType.SHARED_WRITE, LockLevel.DB, "mydb");
    comp.setTablename("mytable");
    comp.setPartitionname("mypartition");
    comp.setOperationType(DataOperationType.DELETE);
    List<LockComponent> components = new ArrayList<LockComponent>(1);
    components.add(comp);
    LockRequest req = new LockRequest(components, "me", "localhost");
    long txnId = openTxn();
    req.setTxnid(txnId);
    LockResponse res = txnHandler.lock(req);
    long lockid1 = res.getLockid();
    assertTrue(res.getState() == LockState.ACQUIRED);
    comp = new LockComponent(LockType.SHARED_WRITE, LockLevel.DB, "mydb");
    comp.setTablename("mytable");
    comp.setPartitionname("mypartition");
    comp.setOperationType(DataOperationType.UPDATE);
    components.clear();
    components.add(comp);
    req = new LockRequest(components, "me", "localhost");
    req.setTxnid(openTxn());
    res = txnHandler.lock(req);
    long lockid2 = res.getLockid();
    assertTrue(res.getState() == LockState.WAITING);
    txnHandler.abortTxn(new AbortTxnRequest(txnId));
    res = txnHandler.checkLock(new CheckLockRequest(lockid2));
    assertTrue(res.getState() == LockState.ACQUIRED);
}