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https://issues.apache.org/jira/browse/BOOKKEEPER-879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15124969#comment-15124969
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ASF GitHub Bot commented on BOOKKEEPER-879:
-------------------------------------------

Github user fpj commented on a diff in the pull request:

    https://github.com/apache/bookkeeper/pull/2#discussion_r51347435
  
    --- Diff: 
bookkeeper-server/src/main/java/org/apache/bookkeeper/client/LedgerMetadata.java
 ---
    @@ -351,7 +364,12 @@ public static LedgerMetadata parseConfig(byte[] bytes, 
Version version) throws I
             LedgerMetadataFormat.Builder builder = 
LedgerMetadataFormat.newBuilder();
             TextFormat.merge(reader, builder);
             LedgerMetadataFormat data = builder.build();
    -        lc.writeQuorumSize = data.getQuorumSize();
    +        lc.writeQuorumSize = data.getQuorumSize();        
    +        if (data.hasCtime()) {
    +            lc.ctime=data.getCtime();
    --- End diff --
    
    Space around "=" sign to be consistent across the code.


> Record ledger creation time
> ---------------------------
>
>                 Key: BOOKKEEPER-879
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-879
>             Project: Bookkeeper
>          Issue Type: New Feature
>          Components: bookkeeper-client, bookkeeper-server
>    Affects Versions: 4.3.1
>            Reporter: Enrico Olivelli
>             Fix For: 4.4.0
>
>
> I think that a creation timestamp would be very useful and it does not cost 
> very much. It would be an immutable value. 
> Nowadays (on 4.3.1) I must keep that info together with the id of the ledger, 
>  for instance in zookeeper,  but if that reference gets lost there is now way 
> to know how old a ledger is.
> I think that this timestamp should be captured on client while calling 
> createLedger or asyncCreateLedger.
> In addition to this very common field maybe it would be useful to add a 
> custom byte[] field named "custom client data" in order to let the client 
> 'describe' the ledger without the need of extra data on Zookeeper. 



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