class VerbosePageCacheTracer extends DefaultPageCacheTracer {

    @Override
    public MajorFlushEvent beginFileFlush( PageSwapper swapper )
    {
        String fileName = swapper.file().getName();
        log.info( format( "Flushing file: '%s'.", fileName ) );
        return new FileFlushEvent( fileName, flushedPages.get(), flushBytesWritten.get(), clock.nanos() );
    }

      VerbosePageCacheTracer( Log log, SystemNanoClock clock );

}