Examples of com.sleepycat.je.rep.ReplicaConsistencyException

com.sleepycat.je.rep.ReplicaConsistencyException
This exception is thrown by a Replica to indicate it could not meet the consistency requirements as defined by the ReplicaConsistencyPolicy in effect for the transaction, within the allowed timeout period.
A Replica will typically keep current with its Master. However, network problems, excessive load on the Master, or Replica, may prevent the Replica from keeping up and the Replica may fall further behind than is permitted by its consistency policy. If the Replica cannot catch up in the time defined by its ReplicaConsistencyPolicy, it will throw this exception from the {@link com.sleepycat.je.Environment#beginTransaction Environment.beginTransaction} method, thus preventing the transaction fromaccessing data that does not meet its consistency requirements.
If this exception is encountered frequently, it indicates that the consistency policy requirements are too strict and cannot be met routinely given the load being placed on the system and the hardware resources that are available to service the load. The exception may also indicate that there is a network related issue that is preventing the Replica from communicating with the master and keeping up with the replication stream.
The application can choose to retry the transaction, until the underlying system problem has been resolved. Or it can try relaxing the consistency constraints, or choose the {@link NoConsistencyRequiredPolicy} so that theconstraints can be satisfied more easily. For example, in a {@link two node replication group}, if the primary goes down, the application may want the secondary node to continue to service read requests, and will lower the consistency requirement on that node in order to maintain read availability. @see ReplicaConsistencyPolicy @see Managing Consistency

                 (consistencyPolicy.getTimeout(TimeUnit.MILLISECONDS),
                  TimeUnit.MILLISECONDS)) {
                /* Timed out. */
                final boolean detached =
                    repNode.getRepImpl().getState().isDetached();
                throw new ReplicaConsistencyException(consistencyPolicy,
                                                      detached);
            }
        }

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                                 * setup timeout and continue with the syncup.
                                 */
                                timeouts.setSetupTimeout();
                                continue;
                            }
                            throw new ReplicaConsistencyException
                                (String.format("Setup time exceeded %,d ms",
                                               timeouts.getSetupTimeout()),
                                               null);
                        }

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                 (consistencyPolicy.getTimeout(TimeUnit.MILLISECONDS),
                  TimeUnit.MILLISECONDS)) {
                /* Timed out. */
                final boolean detached =
                    repNode.getRepImpl().getState().isDetached();
                throw new ReplicaConsistencyException(consistencyPolicy,
                                                      detached);
            }
        }

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                ReplicatedEnvironment.State finalState =
                    nodeState.getRepEnvState();
                if (!done) {
                    /* Timed out. */
                    if (finalState.isReplica()) {
                        throw new ReplicaConsistencyException
                            (String.format("Setup time exceeded %,d ms",
                                           setupTimeout),
                             null);
                    }
                    break;

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Related Classes of com.sleepycat.je.rep.ReplicaConsistencyException

com.sleepycat.je.rep.impl.node.Replica$ConsistencyTracker

com.sleepycat.je.rep.impl.node.RepNode

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