Ejemplo n.º 1
0
  private void finishCommit(
      @Nonnull final ActorRef sender,
      @Nonnull final String transactionID,
      @Nonnull final CohortEntry cohortEntry) {
    LOG.debug(
        "{}: Finishing commit for transaction {}", persistenceId(), cohortEntry.getTransactionID());

    try {
      cohortEntry.commit();

      sender.tell(CommitTransactionReply.INSTANCE.toSerializable(), getSelf());

      shardMBean.incrementCommittedTransactionCount();
      shardMBean.setLastCommittedTransactionTime(System.currentTimeMillis());

    } catch (Exception e) {
      sender.tell(new akka.actor.Status.Failure(e), getSelf());

      LOG.error(
          "{}, An exception occurred while committing transaction {}",
          persistenceId(),
          transactionID,
          e);
      shardMBean.incrementFailedTransactionsCount();
    } finally {
      commitCoordinator.currentTransactionComplete(transactionID, true);
    }
  }
Ejemplo n.º 2
0
  private void finishCommit(@Nonnull final ActorRef sender, final @Nonnull String transactionID) {
    // With persistence enabled, this method is called via applyState by the leader strategy
    // after the commit has been replicated to a majority of the followers.

    CohortEntry cohortEntry = commitCoordinator.getCohortEntryIfCurrent(transactionID);
    if (cohortEntry == null) {
      // The transaction is no longer the current commit. This can happen if the transaction
      // was aborted prior, most likely due to timeout in the front-end. We need to finish
      // committing the transaction though since it was successfully persisted and replicated
      // however we can't use the original cohort b/c it was already preCommitted and may
      // conflict with the current commit or may have been aborted so we commit with a new
      // transaction.
      cohortEntry = commitCoordinator.getAndRemoveCohortEntry(transactionID);
      if (cohortEntry != null) {
        try {
          store.applyForeignCandidate(transactionID, cohortEntry.getCandidate());
        } catch (DataValidationFailedException e) {
          shardMBean.incrementFailedTransactionsCount();
          LOG.error("{}: Failed to re-apply transaction {}", persistenceId(), transactionID, e);
        }

        sender.tell(CommitTransactionReply.INSTANCE.toSerializable(), getSelf());
      } else {
        // This really shouldn't happen - it likely means that persistence or replication
        // took so long to complete such that the cohort entry was expired from the cache.
        IllegalStateException ex =
            new IllegalStateException(
                String.format(
                    "%s: Could not finish committing transaction %s - no CohortEntry found",
                    persistenceId(), transactionID));
        LOG.error(ex.getMessage());
        sender.tell(new akka.actor.Status.Failure(ex), getSelf());
      }
    } else {
      finishCommit(sender, transactionID, cohortEntry);
    }
  }