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Date: Tue, 24 Jun 2014 23:45:59 -0400
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Subject: Re: Does BatchWriter guarantee that all mutations are committed?
From: Eric Newton <eric.newton@gmail.com>
To: "user@accumulo.apache.org" <user@accumulo.apache.org>
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>
> Is it possible that some mutations are not committed when
> BatchWriter.close() returns?
>

No. If you see this behavior, please post a ticket.


> BTW, how to implement multi-row transactional updates in Accumulo? using
> ConditionalWriter?
>

The Big-Table model provides no such guarantees.   You may want to follow
the percolator inspired work on git-hub:
 https://github.com/keith-turner/Accismus

-Eric

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<div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote"><blo=
ckquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left=
-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;paddi=
ng-left:1ex">
<div dir=3D"ltr">Is it possible that some mutations are not committed when =
BatchWriter.close() returns?</div></blockquote><div><br></div><div>No. If y=
ou see this behavior, please post a ticket.</div><div>=C2=A0</div><blockquo=
te class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-widt=
h:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-le=
ft:1ex">
<div dir=3D"ltr"><div>BTW, how to implement multi-row transactional updates=
 in Accumulo? using ConditionalWriter?<br></div></div></blockquote><div><br=
></div><div>The Big-Table model provides no such guarantees. =C2=A0 You may=
 want to follow the percolator inspired work on git-hub: =C2=A0</div>
<div>=C2=A0<a href=3D"https://github.com/keith-turner/Accismus">https://git=
hub.com/keith-turner/Accismus</a></div><div><br></div><div>-Eric</div><div>=
<br></div></div></div></div>

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