org.apache.tephra.visibility

Interface FenceWait

All Known Implementing Classes:

DefaultFenceWait

public interface FenceWait

Used by a writer to wait on a fence so that changes are visible to all readers with in-progress transactions.

Method Summary

Modifier and Type	Method and Description
void	await(long timeout, TimeUnit timeUnit) Waits until the fence is complete, or till the timeout specified.

Method Detail

await

void await(long timeout,
           TimeUnit timeUnit)
    throws TransactionFailureException,
           InterruptedException,
           TimeoutException

Waits until the fence is complete, or till the timeout specified. The fence wait transaction will get re-tried several times until the timeout.

If a fence wait times out then it means there are still some readers with in-progress transactions that have not seen the change. In this case the wait will have to be retried using the same FenceWait object.

Parameters:

timeout - Maximum time to wait

timeUnit - TimeUnit for timeout and sleepTime

Throws:

TransactionFailureException - when not able to start fence wait transaction

InterruptedException - on any interrupt

TimeoutException - when timeout is reached