org.apache.cassandra.db.commitlog

Interface CommitLogReadHandler

All Known Implementing Classes:

CommitLogReplayer

public interface CommitLogReadHandler

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	CommitLogReadHandler.CommitLogReadErrorReason
static class	CommitLogReadHandler.CommitLogReadException

Method Summary

Modifier and Type	Method and Description
void	handleMutation(Mutation m, int size, int entryLocation, CommitLogDescriptor desc) Process a deserialized mutation
void	handleUnrecoverableError(CommitLogReadHandler.CommitLogReadException exception) In instances where we cannot recover from a specific error and don't care what the reader thinks
boolean	shouldSkipSegmentOnError(CommitLogReadHandler.CommitLogReadException exception) Handle an error during segment read, signaling whether or not you want the reader to skip the remainder of the current segment on error.

Method Detail

shouldSkipSegmentOnError

boolean shouldSkipSegmentOnError(CommitLogReadHandler.CommitLogReadException exception)
                          throws java.io.IOException

Handle an error during segment read, signaling whether or not you want the reader to skip the remainder of the current segment on error.

Parameters:

exception - CommitLogReadException w/details on exception state

Returns:

boolean indicating whether to stop reading

Throws:

java.io.IOException - In the event the handler wants forceful termination of all processing, throw IOException.

handleUnrecoverableError

void handleUnrecoverableError(CommitLogReadHandler.CommitLogReadException exception)
                       throws java.io.IOException

In instances where we cannot recover from a specific error and don't care what the reader thinks

Parameters:

exception - CommitLogReadException w/details on exception state

Throws:

java.io.IOException

handleMutation

void handleMutation(Mutation m,
                    int size,
                    int entryLocation,
                    CommitLogDescriptor desc)

Process a deserialized mutation

Parameters:

m - deserialized mutation

size - serialized size of the mutation

entryLocation - filePointer offset inside the CommitLogSegment for the end of the record

desc - CommitLogDescriptor for mutation being processed