org.apache.flume.channel.file
Classes 
CheckpointRebuilder
FileChannel
FileChannelConfiguration
Log
LogFile
LogFile.OperationRecordUpdater
LogFile.SequentialReader
LogFileV3
LogFileV3.SequentialReader
LogRecord
LogUtils
Serialization
TransactionEventRecord
TransactionIDOracle
WriteOrderOracle
Exceptions 
BadCheckpointException
CorruptEventException
LogFileRetryableIOException
NoopRecordException