question: String inprogressZNodeName ( long ledgerId , long firstTxId , long logSegmentSeqNo ) { if ( DistributedLogConstants . LOGSEGMENT_NAME_VERSION == conf . getLogSegmentNameVersion ( ) ) { return String . format ( "%s_%018d" , DistributedLogConstants . INPROGRESS_LOGSEGMENT_PREFIX , logSegmentSeqNo ) ; } else { return DistributedLogConstants . INPROGRESS_LOGSEGMENT_PREFIX + "_" + Long . toString ( firstTxId , 16 ) ; } }
target:  Get the name of the inprogress znode.