[Herddb-dev] Thank you on bookkeeper info
Amit Chavan
achavan1 at gmail.com
Tue Mar 26 03:55:40 CET 2019
Hi Enrico,
Thanks for the insight into how we use bookkeeper. And yes I am subscribed
to the mailing list using this email.
On Mon, Mar 25, 2019 at 3:26 AM <herddb-dev-request at lists.herddb.org> wrote:
> Send herddb-dev mailing list submissions to
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>
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>
> Today's Topics:
>
> 1. Re: Thank you for bookeeper info (Enrico Olivelli)
> 2. R: Fwd: [RESULT] [VOTE] Release apache-calcite-1.19.0
> (release candidate 2) (Alessandro Luccaroni - Diennea)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 25 Mar 2019 09:05:22 +0100
> From: Enrico Olivelli <eolivelli at gmail.com>
> To: Herddb developers <herddb-dev at lists.herddb.org>
> Subject: Re: [Herddb-dev] Thank you for bookeeper info
> Message-ID:
> <
> CACcefgdE1myyR_Y-fKLBedVXsnxLHKzt6of7AhN_zuZm2Zj8sg at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> Il giorno lun 25 mar 2019 alle ore 09:00 Amit Chavan
> <achavan1 at gmail.com> ha scritto:
> >
> > Hello Enrico,
> >
> > Thanks for sending information about bookkeeper to me. I went through
> that tutorial and played around with the bookkeeper a little bit. I have
> few things I want to confirm -
> >
> > 1. Herddb uses bookkeeper[BK] to ensure that writes/updates/deletes made
> to the database are replicated and we don't lose them
> > 2. If we use BK as a WAL then where does the actual data in the table
> spaces reside. I am guessing the WAL is used by Herddb to keep track of
> individual inserts, edits, deletes which are first written to BK and
> applied to in memory copy. Does the data only reside in-memory or it ever
> makes to the disk outside of BK?
>
> See FileDataStorageManager
>
> > 4. What happens to the log entries in the ledgers held within
> bookkeeper. Are they only kept for recovery if the in-memory herddb
> application crashes?
>
> see dropOldLedgers in BookkeeperCommitLog, we are keeping "old"
> ledgers (not useful for the leader) only for a given period.
> if a follower boots and WAL is no more available it downloads data
> from the current leader, if no leader.....boom :-(
> We are using this policy in other applications, never had problems in
> years.
> If you have enough replication you won't see problems.
> Problems may arise if you stay with a single leader for very long time
> and no follower copies data
>
> > 5. What is the policy for retention of ledgers ? Do we keep one ledger
> per table space?
> every tablespace is independent from the other
> see my answer above
>
> >
> > I will start work on the jdbc UT tonight.
>
>
> bq. I had to "moderate" (approve) this message, are you subscribed to
> this list with this address ?
>
> Enrico
>
>
> >
> > Thanks,
> > Amit
> >
> > On Fri, Mar 22, 2019 at 4:00 AM <herddb-dev-request at lists.herddb.org>
> wrote:
> >>
> >> Send herddb-dev mailing list submissions to
> >> herddb-dev at lists.herddb.org
> >>
> >> To subscribe or unsubscribe via the World Wide Web, visit
> >> http://lists.herddb.org/mailman/listinfo/herddb-dev
> >> or, via email, send a message with subject or body 'help' to
> >> herddb-dev-request at lists.herddb.org
> >>
> >> You can reach the person managing the list at
> >> herddb-dev-owner at lists.herddb.org
> >>
> >> When replying, please edit your Subject line so it is more specific
> >> than "Re: Contents of herddb-dev digest..."
> >>
> >>
> >> Today's Topics:
> >>
> >> 1. Re: herddb-dev Digest, Vol 9, Issue 1 (Amit Chavan)
> >> 2. Re: herddb-dev Digest, Vol 9, Issue 1 (Enrico Olivelli)
> >>
> >>
> >> ----------------------------------------------------------------------
> >>
> >> Message: 1
> >> Date: Thu, 21 Mar 2019 16:35:30 -0700
> >> From: Amit Chavan <achavan1 at gmail.com>
> >> To: herddb-dev at lists.herddb.org
> >> Subject: Re: [Herddb-dev] herddb-dev Digest, Vol 9, Issue 1
> >> Message-ID:
> >> <CADsOBjOc4COf3=
> QVg46FLOc38NOjsDtJw_9C2kL7D383EFJW5w at mail.gmail.com>
> >> Content-Type: text/plain; charset="utf-8"
> >>
> >> Hi Enrico,
> >>
> >> I will look at issues tagged to me. Any good information on how we use
> >> bookkeeper to store data will be useful too. Do we have calcite adapter
> to
> >> work with bookkeeper?
> >>
> >> Thanks,
> >> Amit
> >>
> >> On Thu, Mar 21, 2019 at 4:00 AM <herddb-dev-request at lists.herddb.org>
> wrote:
> >>
> >> > Send herddb-dev mailing list submissions to
> >> > herddb-dev at lists.herddb.org
> >> >
> >> > To subscribe or unsubscribe via the World Wide Web, visit
> >> > http://lists.herddb.org/mailman/listinfo/herddb-dev
> >> > or, via email, send a message with subject or body 'help' to
> >> > herddb-dev-request at lists.herddb.org
> >> >
> >> > You can reach the person managing the list at
> >> > herddb-dev-owner at lists.herddb.org
> >> >
> >> > When replying, please edit your Subject line so it is more specific
> >> > than "Re: Contents of herddb-dev digest..."
> >> >
> >> >
> >> > Today's Topics:
> >> >
> >> > 1. Bad error from CI (Enrico Olivelli - Diennea)
> >> > 2. Request - More tasks (Amit Chavan)
> >> > 3. Re: Request - More tasks (Enrico Olivelli)
> >> >
> >> >
> >> > ----------------------------------------------------------------------
> >> >
> >> > Message: 1
> >> > Date: Wed, 20 Mar 2019 14:45:29 +0000
> >> > From: Enrico Olivelli - Diennea <enrico.olivelli at diennea.com>
> >> > To: "herddb-dev at lists.herddb.org" <herddb-dev at lists.herddb.org>
> >> > Subject: [Herddb-dev] Bad error from CI
> >> > Message-ID:
> >> > <30102e56596cf23f1041b95317a54a3d7bed3461.camel at diennea.com>
> >> > Content-Type: text/plain; charset="utf-8"
> >> >
> >> > Hi guys, we are very close to 0.9.0 release,
> >> > but today I found this bad error on Jenkins...
> >> >
> >> > https://github.com/diennea/herddb/issues/361
> >> >
> >> > We have to fix it before a release
> >> >
> >> >
> >> > --
> >> >
> >> > Enrico Olivelli
> >> > Software Development Manager @ Diennea - MagNews
> >> > Tel.: (+39) 0546 066100 - Int. 125
> >> > Viale G.Marconi 30/14 - 48018 Faenza (RA)
> >> >
> >> > ________________________________
> >> >
> >> > CONFIDENTIALITY & PRIVACY NOTICE
> >> > This e-mail (including any attachments) is strictly confidential and
> may
> >> > also contain privileged information. If you are not the intended
> recipient
> >> > you are not authorised to read, print, save, process or disclose this
> >> > message. If you have received this message by mistake, please inform
> the
> >> > sender immediately and destroy this e-mail, its attachments and any
> copies.
> >> > Any use, distribution, reproduction or disclosure by any person other
> than
> >> > the intended recipient is strictly prohibited and the person
> responsible
> >> > may incur in penalties.
> >> > The use of this e-mail is only for professional purposes; there is no
> >> > guarantee that the correspondence towards this e-mail will be read
> only by
> >> > the recipient, because, under certain circumstances, there may be a
> need to
> >> > access this email by third subjects belonging to the Company.
> >> > -------------- next part --------------
> >> > An HTML attachment was scrubbed...
> >> > URL: <
> >> >
> http://lists.herddb.org/pipermail/herddb-dev/attachments/20190320/945e8aba/attachment-0001.html
> >> > >
> >> >
> >> > ------------------------------
> >> >
> >> > Message: 2
> >> > Date: Thu, 21 Mar 2019 00:54:06 -0700
> >> > From: Amit Chavan <achavan1 at gmail.com>
> >> > To: herddb-dev at lists.herddb.org
> >> > Subject: [Herddb-dev] Request - More tasks
> >> > Message-ID:
> >> > <CADsOBjPo8G0N_=
> >> > rzdjVfatokERNE5krohz09Gv8hjknOsv2pQQ at mail.gmail.com>
> >> > Content-Type: text/plain; charset="utf-8"
> >> >
> >> > Hello,
> >> >
> >> > I finished https://github.com/diennea/herddb/pull/359 and looking to
> take
> >> > up more tasks.
> >> >
> >> > Thanks,
> >> > Amit
> >> > -------------- next part --------------
> >> > An HTML attachment was scrubbed...
> >> > URL: <
> >> >
> http://lists.herddb.org/pipermail/herddb-dev/attachments/20190321/3fb6ba36/attachment-0001.html
> >> > >
> >> >
> >> > ------------------------------
> >> >
> >> > Message: 3
> >> > Date: Thu, 21 Mar 2019 08:58:59 +0100
> >> > From: Enrico Olivelli <eolivelli at gmail.com>
> >> > To: Herddb developers <herddb-dev at lists.herddb.org>
> >> > Subject: Re: [Herddb-dev] Request - More tasks
> >> > Message-ID:
> >> > <
> >> > CACcefgee+MLGsXGBxDiSZjX4guvMJx81jprWY-m44MFSE+Nn8Q at mail.gmail.com>
> >> > Content-Type: text/plain; charset="UTF-8"
> >> >
> >> > Amit,
> >> > thank you for your contributions!
> >> > I think we have to push down some unit test in the jdbc module
> >> > regarding the "NOT NULL" feature.
> >> >
> >> > So:
> >> > - positive/negative tests around "create table"
> >> > - JDBC DatabaseMetadata#getColumns
> >> > - positive/negative tests around INSERTS on not null columns
> >> > - positive/negative tests around UPDATE on not null columns
> >> > - simple scan over not null columns
> >> > - order by order not null columns
> >> > - where clauses over not null columns
> >> > - basic join over not null columns
> >> >
> >> > We have a full set of new data types, we have to ensure that these new
> >> > datatypes work well on every common usage pattern
> >> >
> >> > I have tagged you on other issues,
> >> > If you have preferences over some topic please tell,
> >> > I think you are ready to work on more complex tasks
> >> >
> >> > Cheers
> >> > Enrico
> >> >
> >> >
> >> > Il giorno gio 21 mar 2019 alle ore 08:55 Amit Chavan
> >> > <achavan1 at gmail.com> ha scritto:
> >> > >
> >> > > Hello,
> >> > >
> >> > > I finished https://github.com/diennea/herddb/pull/359 and looking
> to
> >> > take up more tasks.
> >> > >
> >> > > Thanks,
> >> > > Amit
> >> > > _______________________________________________
> >> > > herddb-dev mailing list
> >> > > herddb-dev at lists.herddb.org
> >> > > http://lists.herddb.org/mailman/listinfo/herddb-dev
> >> >
> >> >
> >> > ------------------------------
> >> >
> >> > _______________________________________________
> >> > herddb-dev mailing list
> >> > herddb-dev at lists.herddb.org
> >> > http://lists.herddb.org/mailman/listinfo/herddb-dev
> >> >
> >> >
> >> > End of herddb-dev Digest, Vol 9, Issue 1
> >> > ****************************************
> >> >
> >> -------------- next part --------------
> >> An HTML attachment was scrubbed...
> >> URL: <
> http://lists.herddb.org/pipermail/herddb-dev/attachments/20190321/da9229eb/attachment-0001.html
> >
> >>
> >> ------------------------------
> >>
> >> Message: 2
> >> Date: Fri, 22 Mar 2019 08:22:46 +0100
> >> From: Enrico Olivelli <eolivelli at gmail.com>
> >> To: Herddb developers <herddb-dev at lists.herddb.org>
> >> Subject: Re: [Herddb-dev] herddb-dev Digest, Vol 9, Issue 1
> >> Message-ID:
> >> <CACcefgf7dBZ26yDwM4BQWxMC+1SekhSVsgskXu_Vmsu5=
> 8sASA at mail.gmail.com>
> >> Content-Type: text/plain; charset="UTF-8"
> >>
> >> Amit,
> >> Here is where we are dealing with BookKeeper
> >>
> >>
> https://github.com/diennea/herddb/blob/master/herddb-core/src/main/java/herddb/cluster/BookkeeperCommitLog.java
> >>
> >> We are using BookKeeper as Write-Ahead-Log for the database, every
> >> write is written to the WAL and then the change is applied in memory.
> >>
> >> BookKeeper replicates data and it makes really simple to build
> replication.
> >>
> >> Foreach tablespace you have a "leader" which receives all of the
> >> queries, and a number of "followers" (replicas) which are "tailing"
> >> the WAL and applying the same set of changes in the same order to the
> >> local copy of data.
> >>
> >> It is possible that the leader dies or is it partitioned from the
> >> cluster, in this case any follower can be elected as leader.
> >> BookKeeper guarantees (thru the 'fencing' feature) that the system
> >> will always be consistent:
> >> - only one leader can make progress
> >> - every entry read from the log will be always available for reads
> >>
> >> you can check out BK docs:
> >> https://bookkeeper.apache.org/docs/4.9.0/getting-started/concepts/
> >>
> >> this is a Tutorial about BookKeeper which demonstrates its basic usage
> as WAL:
> >> https://github.com/ivankelly/bookkeeper-tutorial
> >>
> >> hope that helps
> >> Enrico
> >>
> >> Il giorno ven 22 mar 2019 alle ore 00:36 Amit Chavan
> >> <achavan1 at gmail.com> ha scritto:
> >> >
> >> > Hi Enrico,
> >> >
> >> > I will look at issues tagged to me. Any good information on how we
> use bookkeeper to store data will be useful too. Do we have calcite adapter
> to work with bookkeeper?
> >> >
> >> > Thanks,
> >> > Amit
> >> >
> >> > On Thu, Mar 21, 2019 at 4:00 AM <herddb-dev-request at lists.herddb.org>
> wrote:
> >> >>
> >> >> Send herddb-dev mailing list submissions to
> >> >> herddb-dev at lists.herddb.org
> >> >>
> >> >> To subscribe or unsubscribe via the World Wide Web, visit
> >> >> http://lists.herddb.org/mailman/listinfo/herddb-dev
> >> >> or, via email, send a message with subject or body 'help' to
> >> >> herddb-dev-request at lists.herddb.org
> >> >>
> >> >> You can reach the person managing the list at
> >> >> herddb-dev-owner at lists.herddb.org
> >> >>
> >> >> When replying, please edit your Subject line so it is more specific
> >> >> than "Re: Contents of herddb-dev digest..."
> >> >>
> >> >>
> >> >> Today's Topics:
> >> >>
> >> >> 1. Bad error from CI (Enrico Olivelli - Diennea)
> >> >> 2. Request - More tasks (Amit Chavan)
> >> >> 3. Re: Request - More tasks (Enrico Olivelli)
> >> >>
> >> >>
> >> >>
> ----------------------------------------------------------------------
> >> >>
> >> >> Message: 1
> >> >> Date: Wed, 20 Mar 2019 14:45:29 +0000
> >> >> From: Enrico Olivelli - Diennea <enrico.olivelli at diennea.com>
> >> >> To: "herddb-dev at lists.herddb.org" <herddb-dev at lists.herddb.org>
> >> >> Subject: [Herddb-dev] Bad error from CI
> >> >> Message-ID:
> >> >> <30102e56596cf23f1041b95317a54a3d7bed3461.camel at diennea.com>
> >> >> Content-Type: text/plain; charset="utf-8"
> >> >>
> >> >> Hi guys, we are very close to 0.9.0 release,
> >> >> but today I found this bad error on Jenkins...
> >> >>
> >> >> https://github.com/diennea/herddb/issues/361
> >> >>
> >> >> We have to fix it before a release
> >> >>
> >> >>
> >> >> --
> >> >>
> >> >> Enrico Olivelli
> >> >> Software Development Manager @ Diennea - MagNews
> >> >> Tel.: (+39) 0546 066100 - Int. 125
> >> >> Viale G.Marconi 30/14 - 48018 Faenza (RA)
> >> >>
> >> >> ________________________________
> >> >>
> >> >> CONFIDENTIALITY & PRIVACY NOTICE
> >> >> This e-mail (including any attachments) is strictly confidential and
> may also contain privileged information. If you are not the intended
> recipient you are not authorised to read, print, save, process or disclose
> this message. If you have received this message by mistake, please inform
> the sender immediately and destroy this e-mail, its attachments and any
> copies. Any use, distribution, reproduction or disclosure by any person
> other than the intended recipient is strictly prohibited and the person
> responsible may incur in penalties.
> >> >> The use of this e-mail is only for professional purposes; there is
> no guarantee that the correspondence towards this e-mail will be read only
> by the recipient, because, under certain circumstances, there may be a need
> to access this email by third subjects belonging to the Company.
> >> >> -------------- next part --------------
> >> >> An HTML attachment was scrubbed...
> >> >> URL: <
> http://lists.herddb.org/pipermail/herddb-dev/attachments/20190320/945e8aba/attachment-0001.html
> >
> >> >>
> >> >> ------------------------------
> >> >>
> >> >> Message: 2
> >> >> Date: Thu, 21 Mar 2019 00:54:06 -0700
> >> >> From: Amit Chavan <achavan1 at gmail.com>
> >> >> To: herddb-dev at lists.herddb.org
> >> >> Subject: [Herddb-dev] Request - More tasks
> >> >> Message-ID:
> >> >> <CADsOBjPo8G0N_=
> rzdjVfatokERNE5krohz09Gv8hjknOsv2pQQ at mail.gmail.com>
> >> >> Content-Type: text/plain; charset="utf-8"
> >> >>
> >> >> Hello,
> >> >>
> >> >> I finished https://github.com/diennea/herddb/pull/359 and looking
> to take
> >> >> up more tasks.
> >> >>
> >> >> Thanks,
> >> >> Amit
> >> >> -------------- next part --------------
> >> >> An HTML attachment was scrubbed...
> >> >> URL: <
> http://lists.herddb.org/pipermail/herddb-dev/attachments/20190321/3fb6ba36/attachment-0001.html
> >
> >> >>
> >> >> ------------------------------
> >> >>
> >> >> Message: 3
> >> >> Date: Thu, 21 Mar 2019 08:58:59 +0100
> >> >> From: Enrico Olivelli <eolivelli at gmail.com>
> >> >> To: Herddb developers <herddb-dev at lists.herddb.org>
> >> >> Subject: Re: [Herddb-dev] Request - More tasks
> >> >> Message-ID:
> >> >> <
> CACcefgee+MLGsXGBxDiSZjX4guvMJx81jprWY-m44MFSE+Nn8Q at mail.gmail.com>
> >> >> Content-Type: text/plain; charset="UTF-8"
> >> >>
> >> >> Amit,
> >> >> thank you for your contributions!
> >> >> I think we have to push down some unit test in the jdbc module
> >> >> regarding the "NOT NULL" feature.
> >> >>
> >> >> So:
> >> >> - positive/negative tests around "create table"
> >> >> - JDBC DatabaseMetadata#getColumns
> >> >> - positive/negative tests around INSERTS on not null columns
> >> >> - positive/negative tests around UPDATE on not null columns
> >> >> - simple scan over not null columns
> >> >> - order by order not null columns
> >> >> - where clauses over not null columns
> >> >> - basic join over not null columns
> >> >>
> >> >> We have a full set of new data types, we have to ensure that these
> new
> >> >> datatypes work well on every common usage pattern
> >> >>
> >> >> I have tagged you on other issues,
> >> >> If you have preferences over some topic please tell,
> >> >> I think you are ready to work on more complex tasks
> >> >>
> >> >> Cheers
> >> >> Enrico
> >> >>
> >> >>
> >> >> Il giorno gio 21 mar 2019 alle ore 08:55 Amit Chavan
> >> >> <achavan1 at gmail.com> ha scritto:
> >> >> >
> >> >> > Hello,
> >> >> >
> >> >> > I finished https://github.com/diennea/herddb/pull/359 and looking
> to take up more tasks.
> >> >> >
> >> >> > Thanks,
> >> >> > Amit
> >> >> > _______________________________________________
> >> >> > herddb-dev mailing list
> >> >> > herddb-dev at lists.herddb.org
> >> >> > http://lists.herddb.org/mailman/listinfo/herddb-dev
> >> >>
> >> >>
> >> >> ------------------------------
> >> >>
> >> >> _______________________________________________
> >> >> herddb-dev mailing list
> >> >> herddb-dev at lists.herddb.org
> >> >> http://lists.herddb.org/mailman/listinfo/herddb-dev
> >> >>
> >> >>
> >> >> End of herddb-dev Digest, Vol 9, Issue 1
> >> >> ****************************************
> >> >
> >> > _______________________________________________
> >> > herddb-dev mailing list
> >> > herddb-dev at lists.herddb.org
> >> > http://lists.herddb.org/mailman/listinfo/herddb-dev
> >>
> >>
> >> ------------------------------
> >>
> >> _______________________________________________
> >> herddb-dev mailing list
> >> herddb-dev at lists.herddb.org
> >> http://lists.herddb.org/mailman/listinfo/herddb-dev
> >>
> >>
> >> End of herddb-dev Digest, Vol 9, Issue 2
> >> ****************************************
> >
> > _______________________________________________
> > herddb-dev mailing list
> > herddb-dev at lists.herddb.org
> > http://lists.herddb.org/mailman/listinfo/herddb-dev
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 25 Mar 2019 10:25:56 +0000
> From: Alessandro Luccaroni - Diennea
> <alessandro.luccaroni at diennea.com>
> To: Herddb developers <herddb-dev at lists.herddb.org>
> Subject: [Herddb-dev] R: Fwd: [RESULT] [VOTE] Release
> apache-calcite-1.19.0 (release candidate 2)
> Message-ID: <d1ac3b7a1a3149f2b017a9f04af18a6e at diennea.com>
> Content-Type: text/plain; charset="utf-8"
>
> Are we looking to specific improvements?
>
> I see that you reported some issues in calcite 1.18:
> https://issues.apache.org/jira/browse/CALCITE-2662,
> https://issues.apache.org/jira/browse/CALCITE-2591 and
> https://issues.apache.org/jira/browse/CALCITE-2405
>
> I also saw some performance improvement in both 1.18 an 1.19, but I?m not
> sure if they matter at all for us (we should only use the parser, am I
> right?).
>
> Alessandro Luccaroni
> Platform Manager @ Diennea - MagNews
> Tel.: (+39) 0546 066100 Int. 924 - Mob.: (+39) 393 7273519
> Viale G.Marconi 30/14 - 48018 Faenza (RA) - Italy
>
> Da: herddb-dev-bounces at lists.herddb.org [mailto:
> herddb-dev-bounces at lists.herddb.org] Per conto di Enrico Olivelli
> Inviato: luned? 25 marzo 2019 08:56
> A: herddb-dev at lists.herddb.org
> Oggetto: [Herddb-dev] Fwd: [RESULT] [VOTE] Release apache-calcite-1.19.0
> (release candidate 2)
>
> I have tested HerdDB with the new latest Calcite, we should upgrade
>
>
> Enrico
>
> ---------- Forwarded message ---------
> From: Kevin Risden <krisden at apache.org<mailto:krisden at apache.org>>
> Date: lun 25 mar 2019, 01:00
> Subject: [RESULT] [VOTE] Release apache-calcite-1.19.0 (release candidate
> 2)
> To: <dev at calcite.apache.org<mailto:dev at calcite.apache.org>>
>
>
> Thanks to everyone who has tested the release candidate and given their
> comments and votes.
>
> The tally is as follows.
>
> 4 binding +1s:
> Francis Chuang
> Julian Hyde
> Kevin Risden
> Jesus Camacho Rodriguez
>
> 3 non-binding +1s:
> Enrico Olivelli
> Andrei Sereda
> Stamatis Zampetakis
>
> No 0s or -1s.
>
> Therefore I am delighted to announce that the proposal to release Apache
> Calcite 1.19.0 has passed.
>
> Thanks everyone. We?ll now roll the release out to the mirrors.
>
> Kevin Risden
>
> ________________________________
>
> CONFIDENTIALITY & PRIVACY NOTICE
> This e-mail (including any attachments) is strictly confidential and may
> also contain privileged information. If you are not the intended recipient
> you are not authorised to read, print, save, process or disclose this
> message. If you have received this message by mistake, please inform the
> sender immediately and destroy this e-mail, its attachments and any copies.
> Any use, distribution, reproduction or disclosure by any person other than
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