Examples with LogPositionMarker org.neo4j.kernel.impl.transaction.log.LogPositionMarker used on opensource projects

Example 21 with LogPositionMarker

use of org.neo4j.kernel.impl.transaction.log.LogPositionMarker in project neo4j by neo4j.

the class TransactionLogsRecoveryTest method shouldTruncateLogAfterSinglePartialTransaction.

@Test
void shouldTruncateLogAfterSinglePartialTransaction() throws Exception {
    // GIVEN
    Path file = logFiles.getLogFile().getLogFileForVersion(logVersion);
    final LogPositionMarker marker = new LogPositionMarker();
    writeSomeData(file, pair -> {
        LogEntryWriter writer = pair.first();
        Consumer<LogPositionMarker> consumer = pair.other();
        // incomplete tx
        // <-- marker has the last good position
        consumer.accept(marker);
        writer.writeStartEntry(5L, 4L, 0, new byte[0]);
        return true;
    });
    // WHEN
    boolean recoveryRequired = recover(storeDir, logFiles);
    // THEN
    assertTrue(recoveryRequired);
    assertEquals(marker.getByteOffset(), Files.size(file));
}

Example 22 with LogPositionMarker

use of org.neo4j.kernel.impl.transaction.log.LogPositionMarker in project neo4j by neo4j.

the class TransactionLogsRecoveryTest method shouldTellTransactionIdStoreAfterSuccessfulRecovery.

@Test
void shouldTellTransactionIdStoreAfterSuccessfulRecovery() throws Exception {
    // GIVEN
    Path file = logFiles.getLogFile().getLogFileForVersion(logVersion);
    final LogPositionMarker marker = new LogPositionMarker();
    final byte[] additionalHeaderData = new byte[0];
    final long transactionId = 4;
    final long commitTimestamp = 5;
    writeSomeData(file, pair -> {
        LogEntryWriter writer = pair.first();
        Consumer<LogPositionMarker> consumer = pair.other();
        // last committed tx
        writer.writeStartEntry(2L, 3L, BASE_TX_CHECKSUM, additionalHeaderData);
        writer.writeCommitEntry(transactionId, commitTimestamp);
        consumer.accept(marker);
        return true;
    });
    // WHEN
    boolean recoveryRequired = recover(storeDir, logFiles);
    // THEN
    assertTrue(recoveryRequired);
    long[] lastClosedTransaction = transactionIdStore.getLastClosedTransaction();
    assertEquals(transactionId, lastClosedTransaction[0]);
    assertEquals(commitTimestamp, transactionIdStore.getLastCommittedTransaction().commitTimestamp());
    assertEquals(logVersion, lastClosedTransaction[1]);
    assertEquals(marker.getByteOffset(), lastClosedTransaction[2]);
}