Examples with ScanController org.apache.derby.iapi.store.access.ScanController used on opensource projects

Example 46 with ScanController

use of org.apache.derby.iapi.store.access.ScanController in project derby by apache.

the class T_CreateConglomRet method t_013.

/**
 * Test backout during critical times of splits.
 * <p>
 * Force logical undo of an operation which generated an internal update
 * of a btree record:
 * case 1:
 *     o insert into unique btree key1, rowlocation_1
 *     o delete from btree        key1, rowlocation_1
 *         - this will mark the record logically deleted.
 *     o insert enough records to move the logically deleted row to another
 *       page to exercise logical undo of the delete.
 *     o insert into btree        key1, rowlocation_2
 *         - this internally will generate a logical update field on the
 *           record.
 *     o insert enough records to move the logically deleted row to another
 *       page to exercise logical undo of the delete.
 *     o abort.
 *
 * case 2:
 *     o same as case 1 but don't change the rowlocation_1 value.  This
 *       simulates what the language will generate on an update of a key
 *       field.
 *
 * @exception  StandardException  Standard exception policy.
 * @exception  T_Fail  Throws T_Fail on any test failure.
 */
protected boolean t_013(TransactionController tc) throws StandardException, T_Fail {
    ScanController scan = null;
    // SanityManager.DEBUG_SET("LockTrace");
    REPORT("Starting t_013");
    T_CreateConglomRet create_ret = new T_CreateConglomRet();
    // Create the btree so that it only allows 2 rows per page.
    createCongloms(tc, 2, true, false, 5, create_ret);
    // Open the base table
    ConglomerateController base_cc = tc.openConglomerate(create_ret.base_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    // Open the secondary index
    ConglomerateController index_cc = tc.openConglomerate(create_ret.index_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    // Create an index row object for the "delete row"
    DataValueDescriptor[] r1 = TemplateRow.newU8Row(2);
    T_SecondaryIndexRow index_row1 = new T_SecondaryIndexRow();
    RowLocation base_rowloc1 = base_cc.newRowLocationTemplate();
    index_row1.init(r1, base_rowloc1, 3);
    // Create another index row object for the other inserts.
    DataValueDescriptor[] r2 = TemplateRow.newU8Row(2);
    T_SecondaryIndexRow index_row2 = new T_SecondaryIndexRow();
    RowLocation base_rowloc2 = base_cc.newRowLocationTemplate();
    index_row2.init(r2, base_rowloc2, 3);
    // Commit the create of the tables so that the following aborts don't
    // undo that work.
    tc.commit();
    // CASE 1:
    tc.commit();
    // Open the base table
    base_cc = tc.openConglomerate(create_ret.base_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    // Open the secondary index
    index_cc = tc.openConglomerate(create_ret.index_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    ((SQLLongint) r1[0]).setValue(1);
    // insert row which will be deleted (key = 100, base_rowloc1):
    ((SQLLongint) r1[1]).setValue(100);
    base_cc.insertAndFetchLocation(r1, base_rowloc1);
    // Insert the row into the secondary index.
    if (index_cc.insert(index_row1.getRow()) != 0)
        throw T_Fail.testFailMsg("insert failed");
    // 5 rows are on a page, so 10 should be plenty.
    for (int i = 0; i < 10; i++) {
        ((SQLLongint) r2[1]).setValue(i);
        // Insert the row into the base table;remember its location.
        base_cc.insertAndFetchLocation(r2, base_rowloc2);
        // Insert the row into the secondary index.
        if (index_cc.insert(index_row2.getRow()) != 0)
            throw T_Fail.testFailMsg("insert failed");
    }
    // delete row which was inserted (key = 100, base_rowloc1):
    if (!t_delete(tc, create_ret.index_conglomid, index_row1.getRow(), false)) {
        throw T_Fail.testFailMsg("t_008: could not delete key.");
    }
    base_cc.delete(base_rowloc1);
    // 5 rows are on a page, so 10 should be plenty.
    for (int i = 10; i < 20; i++) {
        ((SQLLongint) r2[1]).setValue(i);
        // Insert the row into the base table;remember its location.
        base_cc.insertAndFetchLocation(r2, base_rowloc2);
        // Insert the row into the secondary index.
        if (index_cc.insert(index_row2.getRow()) != 0)
            throw T_Fail.testFailMsg("insert failed");
    }
    // insert row which will be deleted (key = 100, base_rowloc1):
    ((SQLLongint) r1[1]).setValue(100);
    base_cc.insertAndFetchLocation(r1, base_rowloc1);
    // Insert the row into the secondary index.
    if (index_cc.insert(index_row1.getRow()) != 0)
        throw T_Fail.testFailMsg("insert failed");
    // 5 rows are on a page, so 10 should be plenty.
    for (int i = 20; i < 30; i++) {
        ((SQLLongint) r2[1]).setValue(i);
        // Insert the row into the base table;remember its location.
        base_cc.insertAndFetchLocation(r2, base_rowloc2);
        // Insert the row into the secondary index.
        if (index_cc.insert(index_row2.getRow()) != 0)
            throw T_Fail.testFailMsg("insert failed");
    }
    // RESOLVE (mikem) - check that the right row is at key 100.
    tc.abort();
    // index check - there should be no records left.
    ScanController empty_scan = tc.openScan(create_ret.index_conglomid, false, 0, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, (FormatableBitSet) null, null, ScanController.NA, null, null, ScanController.NA);
    if (empty_scan.next())
        throw T_Fail.testFailMsg("t_002: there are still rows in table.");
    tc.commit();
    REPORT("Ending t_013");
    return true;
}

Example 47 with ScanController

use of org.apache.derby.iapi.store.access.ScanController in project derby by apache.

the class T_CreateConglomRet method t_002.

/**
 * Test backout during critical times of splits.
 * <p>
 * Use trace points to force errors in split at critical points:
 *     leaf_split_abort{1,2,3,4}
 *
 * @exception  StandardException  Standard exception policy.
 * @exception  T_Fail  Throws T_Fail on any test failure.
 */
protected boolean t_002(TransactionController tc) throws StandardException, T_Fail {
    ScanController scan = null;
    // SanityManager.DEBUG_SET("LockTrace");
    REPORT("Starting t_002");
    T_CreateConglomRet create_ret = new T_CreateConglomRet();
    // Create the btree so that it only allows 2 rows per page.
    createCongloms(tc, 2, false, false, 2, create_ret);
    // Open the base table
    ConglomerateController base_cc = tc.openConglomerate(create_ret.base_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    // Open the secondary index
    ConglomerateController index_cc = tc.openConglomerate(create_ret.index_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    if (!(index_cc instanceof B2IController)) {
        throw T_Fail.testFailMsg("openConglomerate returned wrong type");
    }
    index_cc.checkConsistency();
    // Create a row and insert into base table, remembering it's location.
    DataValueDescriptor[] r1 = TemplateRow.newU8Row(2);
    T_SecondaryIndexRow index_row1 = new T_SecondaryIndexRow();
    RowLocation base_rowloc1 = base_cc.newRowLocationTemplate();
    index_row1.init(r1, base_rowloc1, 3);
    // Commit the create of the tables so that the following aborts don't
    // undo that work.
    tc.commit();
    // Now try aborts of transactions during splits, using magic
    // trace flags.  This test inserts enough rows to cause a split
    // and then forces the split to fail at various key points.  The
    // split should be backed out and also the rows before the split.
    // The test makes sure that there are some inserts before the forced
    // split abort.
    String[] debug_strings = { "leaf_split_growRoot1", "leaf_split_growRoot2", "leaf_split_growRoot3", "leaf_split_growRoot4", "leaf_split_growRoot5", "leaf_split_abort1", "leaf_split_abort2", "leaf_split_abort3", "leaf_split_abort4", "branch_split_abort1", "branch_split_abort2", "branch_split_abort3", "branch_split_abort4", "BTreeController_doIns2" };
    for (int errs = 0; errs < debug_strings.length; errs++) {
        REPORT("Doing abort test: " + debug_strings[errs]);
        if (SanityManager.DEBUG)
            SanityManager.DEBUG_SET(debug_strings[errs]);
        try {
            // Open the base table
            base_cc = tc.openConglomerate(create_ret.base_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
            // Open the secondary index
            index_cc = tc.openConglomerate(create_ret.index_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
            // insert one row that does not cause failure.
            ((SQLLongint) r1[0]).setValue(2);
            ((SQLLongint) r1[1]).setValue(10000 + errs);
            // Insert the row into the base table;remember its location.
            base_cc.insertAndFetchLocation(r1, base_rowloc1);
            // Insert the row into the secondary index.
            if (index_cc.insert(index_row1.getRow()) != 0)
                throw T_Fail.testFailMsg("insert failed");
            // language to make sure error handling really works.
            if (SanityManager.DEBUG)
                SanityManager.DEBUG_SET(debug_strings[errs]);
            // now insert enough rows to cause failure
            for (int i = 100; i > 0; i -= 2) {
                ((SQLLongint) r1[0]).setValue(2);
                ((SQLLongint) r1[1]).setValue(i);
                // Insert the row into the base table;remember its location.
                base_cc.insertAndFetchLocation(r1, base_rowloc1);
                // Insert the row into the secondary index.
                if (index_cc.insert(index_row1.getRow()) != 0) {
                    throw T_Fail.testFailMsg("insert failed");
                }
            }
            throw T_Fail.testFailMsg("debug flag (" + debug_strings[errs] + ")did not cause exception.");
        } catch (StandardException e) {
            ContextService contextFactory = getContextService();
            // Get the context manager.
            ContextManager cm = contextFactory.getCurrentContextManager();
            if (SanityManager.DEBUG)
                SanityManager.ASSERT(cm != null);
            cm.cleanupOnError(e, isdbActive());
            // RESOLVE (mikem) - when split abort works come up with
            // a good sanity check here.
            // 
            // index check - there should be no records:
            scan = tc.openScan(create_ret.index_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, (FormatableBitSet) null, null, ScanController.NA, null, null, ScanController.NA);
            index_cc = tc.openConglomerate(create_ret.index_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
            index_cc.checkConsistency();
            index_cc.close();
            if (scan.next()) {
                throw T_Fail.testFailMsg("t_002: there are still rows in table.");
            }
            scan.close();
        }
        // Unset the flag.
        if (SanityManager.DEBUG)
            SanityManager.DEBUG_CLEAR(debug_strings[errs]);
    }
    // Try a simple abort.  The following adds enough rows to cause a
    // split.  The result of the split should be a tree with no rows, but
    // the splits will not be undone.  It is up to the implementation
    // whether the undo's cause shrinks in the tree.  In the initial
    // implementation it won't.
    {
        tc.commit();
        // Open the base table
        base_cc = tc.openConglomerate(create_ret.base_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
        // Open the secondary index
        index_cc = tc.openConglomerate(create_ret.index_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
        // Make sure that normal abort leaves the committed split.
        for (int i = 0; i < 3; i++) {
            ((SQLLongint) r1[0]).setValue(2);
            ((SQLLongint) r1[1]).setValue(i);
            // Insert the row into the base table;remember its location.
            base_cc.insertAndFetchLocation(r1, base_rowloc1);
            // Insert the row into the secondary index.
            if (index_cc.insert(index_row1.getRow()) != 0)
                throw T_Fail.testFailMsg("insert failed");
        }
        tc.abort();
        // index check - there should be no records left.
        ScanController empty_scan = tc.openScan(create_ret.index_conglomid, false, 0, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, (FormatableBitSet) null, null, ScanController.NA, null, null, ScanController.NA);
        if (empty_scan.next()) {
            throw T_Fail.testFailMsg("t_002: there are still rows in table.");
        }
    }
    tc.commit();
    REPORT("Ending t_002");
    return true;
}

Example 48 with ScanController

use of org.apache.derby.iapi.store.access.ScanController in project derby by apache.

the class T_CreateConglomRet method t_016.

/**
 * Test deadlocks during critical times of row level locking.
 * <p>
 * Use trace points to force errors in split at critical points:
 *     leaf_split_abort{1,2,3,4}
 *
 * @exception  StandardException  Standard exception policy.
 * @exception  T_Fail  Throws T_Fail on any test failure.
 */
protected boolean t_016(TransactionController tc) throws StandardException, T_Fail {
    ScanController scan = null;
    // SanityManager.DEBUG_SET("LockTrace");
    REPORT("Starting t_016");
    T_CreateConglomRet create_ret = new T_CreateConglomRet();
    // Create the btree so that it only allows 2 rows per page.
    createCongloms(tc, 2, false, false, 2, create_ret);
    // Open the base table
    ConglomerateController base_cc = tc.openConglomerate(create_ret.base_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    // Open the secondary index
    ConglomerateController index_cc = tc.openConglomerate(create_ret.index_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    if (!(index_cc instanceof B2IController)) {
        throw T_Fail.testFailMsg("openConglomerate returned wrong type");
    }
    index_cc.checkConsistency();
    // Create a row and insert into base table, remembering it's location.
    DataValueDescriptor[] r1 = TemplateRow.newU8Row(2);
    T_SecondaryIndexRow index_row1 = new T_SecondaryIndexRow();
    RowLocation base_rowloc1 = base_cc.newRowLocationTemplate();
    index_row1.init(r1, base_rowloc1, 3);
    // Commit the create of the tables so that the following aborts don't
    // undo that work.
    tc.commit();
    // Open the base table
    base_cc = tc.openConglomerate(create_ret.base_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    // Open the secondary index
    index_cc = tc.openConglomerate(create_ret.index_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    // now insert enough rows to cause failure
    for (int i = 100; i > 0; i -= 2) {
        ((SQLLongint) r1[0]).setValue(2);
        ((SQLLongint) r1[1]).setValue(i);
        // Insert the row into the base table;remember its location.
        base_cc.insertAndFetchLocation(r1, base_rowloc1);
        // Insert the row into the secondary index.
        if (index_cc.insert(index_row1.getRow()) != 0) {
            throw T_Fail.testFailMsg("insert failed");
        }
    }
    tc.abort();
    // Now try simulated deadlocks
    // RESOLVE (Mikem) - test out aborts and errors during inserts.
    String[] deadlock_debug_strings = { "B2iRowLocking3_1_lockScanRow2", "B2iRowLocking3_2_lockScanRow2", // "BTreeController_doIns2",
    "BTreeScan_positionAtStartPosition2", // "BTreeScan_reposition2",
    "BTreeScan_fetchNextGroup2" };
    for (int errs = 0; errs < deadlock_debug_strings.length; errs++) {
        try {
            REPORT("Doing deadlock tests: " + deadlock_debug_strings[errs]);
            // latch release path through the code.
            if (SanityManager.DEBUG)
                SanityManager.DEBUG_SET(deadlock_debug_strings[errs]);
            // Just scan the rows and make sure you see them all, mostly just
            // a test to make sure no errors are thrown by the latch release
            // code paths.
            scan = tc.openScan(create_ret.index_conglomid, false, 0, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, (FormatableBitSet) null, null, ScanController.NA, null, null, ScanController.NA);
            int row_count = 0;
            while (scan.next()) {
                row_count++;
            }
            scan.close();
            throw T_Fail.testFailMsg("expected deadlock");
        } catch (StandardException e) {
            if (!e.getMessageId().equals(SQLState.DEADLOCK))
                throw e;
            ContextService contextFactory = getContextService();
            // Get the context manager.
            ContextManager cm = contextFactory.getCurrentContextManager();
            if (SanityManager.DEBUG)
                SanityManager.ASSERT(cm != null);
            cm.cleanupOnError(e, isdbActive());
        }
    }
    tc.commit();
    REPORT("Ending t_016");
    return true;
}

Example 49 with ScanController

use of org.apache.derby.iapi.store.access.ScanController in project derby by apache.

the class T_ConsistencyChecker method openUnqualifiedHeapScan.

/* Open an unqualified scan on the heap for update */
private ScanController openUnqualifiedHeapScan() throws StandardException {
    ScanController heapScan;
    heapScan = tc.openScan(td.getHeapConglomerateId(), // hold
    false, // forUpdate
    TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_TABLE, TransactionController.ISOLATION_SERIALIZABLE, (FormatableBitSet) null, // startKeyValue
    null, // not used with null start posn.
    0, // qualifier
    null, // stopKeyValue
    null, // not used with null stop posn.
    0);
    return heapScan;
}

Example 50 with ScanController

use of org.apache.derby.iapi.store.access.ScanController in project derby by apache.

the class T_ConsistencyChecker method deleteFirstHeapRow.

/**
 * Delete the first row from the heap, without
 * deleting it from the indexes on the table.
 *
 * @param schemaName	The schema name.
 * @param tableName		The table name.
 *
 * @exception StandardException		Thrown on error
 */
public static void deleteFirstHeapRow(String schemaName, String tableName) throws StandardException {
    T_ConsistencyChecker t_cc = new T_ConsistencyChecker(schemaName, tableName, null);
    t_cc.getContexts();
    t_cc.getDescriptors();
    /* Open a scan on the heap */
    ScanController heapScan = t_cc.openUnqualifiedHeapScan();
    // Move to the 1st row in the heap
    heapScan.next();
    // Delete the 1st row in the heap
    heapScan.delete();
    heapScan.close();
}