Examples of org.voltdb.StoredProcedureInvocationHints

org.voltdb.StoredProcedureInvocationHints
Special object that can be used to pass hints about what a txn will do when the client submits the request. @author pavlo

    // --------------------------------------------------------------------------------------------
    
    private BlockingSendPayment startTxn() throws Exception {
        // Fire off a distributed a txn that will block.
        Object dtxnParams[] = new Object[]{ BASE_PARTITION, BASE_PARTITION+1, 1.0 };
        StoredProcedureInvocationHints dtxnHints = new StoredProcedureInvocationHints();
        dtxnHints.basePartition = BASE_PARTITION;
        LatchableProcedureCallback dtxnCallback = new LatchableProcedureCallback(1);
        this.client.callProcedure(dtxnCallback, this.blockingProc.getName(), dtxnHints, dtxnParams);
        
        // Block until we know that the txn has started running

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        CatalogContext catalogContext = this.getCatalogContext();
        Client client = this.getClient();
        RegressionSuiteUtil.initializeTPCCDatabase(catalogContext, client, true);
        
        final int repeat = 100;
        final StoredProcedureInvocationHints hints = new StoredProcedureInvocationHints();
        final ProcedureCallback callbacks[] = new ProcedureCallback[catalogContext.numberOfPartitions];
        final CountDownLatch latch = new CountDownLatch(catalogContext.numberOfPartitions * repeat);
        for (int p = 0; p < catalogContext.numberOfPartitions; p++) {
            final int partition = p;
            callbacks[p] = new ProcedureCallback() {

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            dbg.setConflictChecker(remoteChecker);
        } // FOR
        
        // Fire off a distributed a txn that will block.
        Object dtxnParams[] = new Object[]{ BASE_PARTITION, BASE_PARTITION+1, 1.0 };
        StoredProcedureInvocationHints dtxnHints = new StoredProcedureInvocationHints();
        dtxnHints.basePartition = BASE_PARTITION;
        LatchableProcedureCallback dtxnCallback = new LatchableProcedureCallback(1);
        this.client.callProcedure(dtxnCallback, this.blockingProc.getName(), dtxnHints, dtxnParams);
        
        // Block until we know that the txn has started running
        BlockingSendPayment dtxnVoltProc = HStoreSiteTestUtil.getCurrentVoltProcedure(this.baseExecutor, BlockingSendPayment.class); 
        assertNotNull(dtxnVoltProc);
        boolean result = dtxnVoltProc.NOTIFY_BEFORE.tryAcquire(HStoreSiteTestUtil.NOTIFY_TIMEOUT, TimeUnit.MILLISECONDS);
        assertTrue(result);
        this.checkCurrentDtxn();
        
        // Let the dtxn execute some queries that modify the remote partition
        dtxnVoltProc.LOCK_BEFORE.release();
        result = dtxnVoltProc.NOTIFY_AFTER.tryAcquire(HStoreSiteTestUtil.NOTIFY_TIMEOUT, TimeUnit.MILLISECONDS);
        assertTrue(result);
        
        // Fire off a single-partition txn that will get executed right away but 
        // have its ClientResponse held until it learns whether the dtxn
        // will commit successfully
        Procedure spProc = this.getProcedure(DepositChecking.class);
        Object spParams[] = new Object[]{ remotePartition, 1.0 };
        StoredProcedureInvocationHints spHints = new StoredProcedureInvocationHints();
        spHints.basePartition = remotePartition;
        LatchableProcedureCallback spCallback0 = new LatchableProcedureCallback(1);
        this.client.callProcedure(spCallback0, spProc.getName(), spHints, spParams);
        HStoreSiteTestUtil.checkBlockedSpeculativeTxns(remoteExecutor, 1);

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        PartitionExecutor.Debug remoteDebug = this.remoteExecutor.getDebugContext();
        remoteDebug.getSpecExecScheduler().getDebugContext().setConflictChecker(checker);
        
        // Fire off a distributed a txn that will block.
        Object dtxnParams[] = new Object[]{ BASE_PARTITION, BASE_PARTITION+1, 1.0 };
        StoredProcedureInvocationHints dtxnHints = new StoredProcedureInvocationHints();
        dtxnHints.basePartition = BASE_PARTITION;
        LatchableProcedureCallback dtxnCallback = new LatchableProcedureCallback(1);
        this.client.callProcedure(dtxnCallback, this.blockingProc.getName(), dtxnHints, dtxnParams);
        
        // Block until we know that the txn has started running
        BlockingSendPayment dtxnVoltProc = HStoreSiteTestUtil.getCurrentVoltProcedure(this.baseExecutor, BlockingSendPayment.class); 
        assertNotNull(dtxnVoltProc);
        boolean result = dtxnVoltProc.NOTIFY_BEFORE.tryAcquire(HStoreSiteTestUtil.NOTIFY_TIMEOUT, TimeUnit.MILLISECONDS);
        assertTrue(result);
        this.checkCurrentDtxn();
        
        // Fire off a single-partition txn that will not get executed right away
        // We have to use the blocking version because there needs to be data in tables first
        Object spParams[] = new Object[]{ BASE_PARTITION+1, BASE_PARTITION+1, 1.0 };
        StoredProcedureInvocationHints spHints = new StoredProcedureInvocationHints();
        spHints.basePartition = BASE_PARTITION+1;
        LatchableProcedureCallback spCallback0 = new LatchableProcedureCallback(1);
        this.client.callProcedure(spCallback0, this.nonblockingProc.getName(), spHints, spParams);
        HStoreSiteTestUtil.checkQueuedTxns(this.remoteExecutor, 1);

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Related Classes of org.voltdb.StoredProcedureInvocationHints

edu.brown.hstore.TestPartitionExecutor2PC

edu.brown.hstore.TestReadWriteTracking

org.voltdb.regressionsuites.TestHStoreSiteSuite

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