A question for txid

[Azuryy Yu]

Hi dear All,

It's long type for the txid currently,

FSImage.java:

boolean loadFSImage(FSNamesystem target, MetaRecoveryContext recovery)
    throws IOException{

  editLog.setNextTxId(lastAppliedTxId + 1L);
}

Is it possible that (lastAppliedTxId + 1L) exceed Long.MAX_VALUE ?