Package co.cask.tephra

Examples of co.cask.tephra.TransactionManager.canCommit()

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      // TODO: replace with new persistence tests
      final byte[] a = { 'a' };
      final byte[] b = { 'b' };
      // start a tx1, add a change A and commit
      Transaction tx1 = txManager.startShort();
      Assert.assertTrue(txManager.canCommit(tx1, Collections.singleton(a)));
      Assert.assertTrue(txManager.commit(tx1));
      // start a tx2 and add a change B
      Transaction tx2 = txManager.startShort();
      Assert.assertTrue(txManager.canCommit(tx2, Collections.singleton(b)));
      // start a tx3
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      Transaction tx1 = txManager.startShort();
      Assert.assertTrue(txManager.canCommit(tx1, Collections.singleton(a)));
      Assert.assertTrue(txManager.commit(tx1));
      // start a tx2 and add a change B
      Transaction tx2 = txManager.startShort();
      Assert.assertTrue(txManager.canCommit(tx2, Collections.singleton(b)));
      // start a tx3
      Transaction tx3 = txManager.startShort();
      // restart
      txManager.stopAndWait();
      TransactionSnapshot origState = txManager.getCurrentState();
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      // tx1 must be visble from tx2, but tx3 and tx4 must not
      Assert.assertTrue(tx2.isVisible(tx1.getWritePointer()));
      Assert.assertFalse(tx2.isVisible(tx3.getWritePointer()));
      Assert.assertFalse(tx2.isVisible(tx4.getWritePointer()));
      // add same change for tx3
      Assert.assertFalse(txManager.canCommit(tx3, Collections.singleton(b)));
      // check visibility with new xaction
      Transaction tx5 = txManager.startShort();
      Assert.assertTrue(tx5.isVisible(tx1.getWritePointer()));
      Assert.assertTrue(tx5.isVisible(tx2.getWritePointer()));
      Assert.assertFalse(tx5.isVisible(tx3.getWritePointer()));
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      // TODO: replace with new persistence tests
      final byte[] a = { 'a' };
      final byte[] b = { 'b' };
      // start a tx1, add a change A and commit
      Transaction tx1 = txManager.startShort();
      Assert.assertTrue(txManager.canCommit(tx1, Collections.singleton(a)));
      Assert.assertTrue(txManager.commit(tx1));
      // start a tx2 and add a change B
      Transaction tx2 = txManager.startShort();
      Assert.assertTrue(txManager.canCommit(tx2, Collections.singleton(b)));
      // start a tx3
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      Transaction tx1 = txManager.startShort();
      Assert.assertTrue(txManager.canCommit(tx1, Collections.singleton(a)));
      Assert.assertTrue(txManager.commit(tx1));
      // start a tx2 and add a change B
      Transaction tx2 = txManager.startShort();
      Assert.assertTrue(txManager.canCommit(tx2, Collections.singleton(b)));
      // start a tx3
      Transaction tx3 = txManager.startShort();
      TransactionSnapshot origState = txManager.getCurrentState();
      LOG.info("Orig state: " + origState);
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