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Posted to common-dev@hadoop.apache.org by Arun C Murthy <ac...@hortonworks.com> on 2014/08/19 19:52:45 UTC

Dropping support for JDK6 in Apache Hadoop

[Apologies for the wide distribution.]

Dear HBase/Hive/Pig/Oozie communities,

 We, over at Hadoop are considering dropping support for JDK6 this year. 

 As you maybe aware we just released hadoop-2.5.0 and are now considering making the next release i.e. hadoop-2.6.0 the *last* release of Apache Hadoop which supports JDK6. This means, from hadoop-2.7.0 onwards we will not support JDK6 anymore and we *may* start relying on JDK7-specific apis.

 Now, the above releases a proposal and we do not want to pull the trigger without talking to projects downstream - hence the request for you feedback.

 Please feel free to forward this to other communities you might deem to be at risk from this too.

thanks,
Arun


-- 
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which it is addressed and may contain information that is confidential, 
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of this message is not the intended recipient, you are hereby notified that 
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RE: Dropping support for JDK6 in Apache Hadoop

Posted by Srikanth Sundarrajan <sr...@hotmail.com>.

I dont think you can generate 1.6 target classes with 1.7 source version. If we move to 1.7, we will have to publish 1.7 artifacts.

Regards
Srikanth Sundarrajan

> Date: Thu, 21 Aug 2014 11:57:51 -0700
> Subject: Re: Dropping support for JDK6 in Apache Hadoop
> From: venkatesh@innerzeal.com
> To: dev@falcon.incubator.apache.org
> 
> We can move to 1.7 but also generate 1.6 artifacts?
> 
> 
> On Wed, Aug 20, 2014 at 10:06 PM, Shwetha GS <sh...@inmobi.com> wrote:
> 
> > I think the restriction is already removed in oozie trunk. 4.1 release
> > should have the fix
> >
> >
> > On Wed, Aug 20, 2014 at 11:12 PM, Seetharam Venkatesh <
> > venkatesh@innerzeal.com> wrote:
> >
> > > I discussed this with Srikanth and for us the only dependency is Oozie I
> > > think. Once Oozie moved to 1.7, we should jump and use the new features
> > > that make a lot of boilerplate code go away.
> > >
> > >
> > > On Tue, Aug 19, 2014 at 9:54 PM, Shwetha GS <sh...@inmobi.com>
> > wrote:
> > >
> > > > ---------- Forwarded message ----------
> > > > From: Arun C Murthy <ac...@hortonworks.com>
> > > > Date: Tue, Aug 19, 2014 at 11:22 PM
> > > > Subject: Dropping support for JDK6 in Apache Hadoop
> > > > To: "dev@hbase.apache.org" <de...@hbase.apache.org>, dev@hive.apache.org
> > ,
> > > > dev@pig.apache.org, dev@oozie.apache.org
> > > > Cc: "common-dev@hadoop.apache.org" <co...@hadoop.apache.org>
> > > >
> > > >
> > > > [Apologies for the wide distribution.]
> > > >
> > > > Dear HBase/Hive/Pig/Oozie communities,
> > > >
> > > >  We, over at Hadoop are considering dropping support for JDK6 this
> > year.
> > > >
> > > >  As you maybe aware we just released hadoop-2.5.0 and are now
> > considering
> > > > making the next release i.e. hadoop-2.6.0 the *last* release of Apache
> > > > Hadoop which supports JDK6. This means, from hadoop-2.7.0 onwards we
> > will
> > > > not support JDK6 anymore and we *may* start relying on JDK7-specific
> > > apis.
> > > >
> > > >  Now, the above releases a proposal and we do not want to pull the
> > > trigger
> > > > without talking to projects downstream - hence the request for you
> > > > feedback.
> > > >
> > > >  Please feel free to forward this to other communities you might deem
> > to
> > > be
> > > > at risk from this too.
> > > >
> > > > thanks,
> > > > Arun
> > > >
> > > >
> > > > --
> > > > CONFIDENTIALITY NOTICE
> > > > NOTICE: This message is intended for the use of the individual or
> > entity
> > > to
> > > > which it is addressed and may contain information that is confidential,
> > > > privileged and exempt from disclosure under applicable law. If the
> > reader
> > > > of this message is not the intended recipient, you are hereby notified
> > > that
> > > > any printing, copying, dissemination, distribution, disclosure or
> > > > forwarding of this communication is strictly prohibited. If you have
> > > > received this communication in error, please contact the sender
> > > immediately
> > > > and delete it from your system. Thank You.
> > > >
> > > > --
> > > > _____________________________________________________________
> > > > The information contained in this communication is intended solely for
> > > the
> > > > use of the individual or entity to whom it is addressed and others
> > > > authorized to receive it. It may contain confidential or legally
> > > privileged
> > > > information. If you are not the intended recipient you are hereby
> > > notified
> > > > that any disclosure, copying, distribution or taking any action in
> > > reliance
> > > > on the contents of this information is strictly prohibited and may be
> > > > unlawful. If you have received this communication in error, please
> > notify
> > > > us immediately by responding to this email and then delete it from your
> > > > system. The firm is neither liable for the proper and complete
> > > transmission
> > > > of the information contained in this communication nor for any delay in
> > > its
> > > > receipt.
> > > >
> > >
> > >
> > >
> > > --
> > > Regards,
> > > Venkatesh
> > >
> > > “Perfection (in design) is achieved not when there is nothing more to
> > add,
> > > but rather when there is nothing more to take away.”
> > > - Antoine de Saint-Exupéry
> > >
> >
> > --
> > _____________________________________________________________
> > The information contained in this communication is intended solely for the
> > use of the individual or entity to whom it is addressed and others
> > authorized to receive it. It may contain confidential or legally privileged
> > information. If you are not the intended recipient you are hereby notified
> > that any disclosure, copying, distribution or taking any action in reliance
> > on the contents of this information is strictly prohibited and may be
> > unlawful. If you have received this communication in error, please notify
> > us immediately by responding to this email and then delete it from your
> > system. The firm is neither liable for the proper and complete transmission
> > of the information contained in this communication nor for any delay in its
> > receipt.
> >
> 
> 
> 
> -- 
> Regards,
> Venkatesh
> 
> “Perfection (in design) is achieved not when there is nothing more to add,
> but rather when there is nothing more to take away.”
> - Antoine de Saint-Exupéry

Re: Dropping support for JDK6 in Apache Hadoop

Posted by Seetharam Venkatesh <ve...@innerzeal.com>.

We can move to 1.7 but also generate 1.6 artifacts?


On Wed, Aug 20, 2014 at 10:06 PM, Shwetha GS <sh...@inmobi.com> wrote:

> I think the restriction is already removed in oozie trunk. 4.1 release
> should have the fix
>
>
> On Wed, Aug 20, 2014 at 11:12 PM, Seetharam Venkatesh <
> venkatesh@innerzeal.com> wrote:
>
> > I discussed this with Srikanth and for us the only dependency is Oozie I
> > think. Once Oozie moved to 1.7, we should jump and use the new features
> > that make a lot of boilerplate code go away.
> >
> >
> > On Tue, Aug 19, 2014 at 9:54 PM, Shwetha GS <sh...@inmobi.com>
> wrote:
> >
> > > ---------- Forwarded message ----------
> > > From: Arun C Murthy <ac...@hortonworks.com>
> > > Date: Tue, Aug 19, 2014 at 11:22 PM
> > > Subject: Dropping support for JDK6 in Apache Hadoop
> > > To: "dev@hbase.apache.org" <de...@hbase.apache.org>, dev@hive.apache.org
> ,
> > > dev@pig.apache.org, dev@oozie.apache.org
> > > Cc: "common-dev@hadoop.apache.org" <co...@hadoop.apache.org>
> > >
> > >
> > > [Apologies for the wide distribution.]
> > >
> > > Dear HBase/Hive/Pig/Oozie communities,
> > >
> > >  We, over at Hadoop are considering dropping support for JDK6 this
> year.
> > >
> > >  As you maybe aware we just released hadoop-2.5.0 and are now
> considering
> > > making the next release i.e. hadoop-2.6.0 the *last* release of Apache
> > > Hadoop which supports JDK6. This means, from hadoop-2.7.0 onwards we
> will
> > > not support JDK6 anymore and we *may* start relying on JDK7-specific
> > apis.
> > >
> > >  Now, the above releases a proposal and we do not want to pull the
> > trigger
> > > without talking to projects downstream - hence the request for you
> > > feedback.
> > >
> > >  Please feel free to forward this to other communities you might deem
> to
> > be
> > > at risk from this too.
> > >
> > > thanks,
> > > Arun
> > >
> > >
> > > --
> > > CONFIDENTIALITY NOTICE
> > > NOTICE: This message is intended for the use of the individual or
> entity
> > to
> > > which it is addressed and may contain information that is confidential,
> > > privileged and exempt from disclosure under applicable law. If the
> reader
> > > of this message is not the intended recipient, you are hereby notified
> > that
> > > any printing, copying, dissemination, distribution, disclosure or
> > > forwarding of this communication is strictly prohibited. If you have
> > > received this communication in error, please contact the sender
> > immediately
> > > and delete it from your system. Thank You.
> > >
> > > --
> > > _____________________________________________________________
> > > The information contained in this communication is intended solely for
> > the
> > > use of the individual or entity to whom it is addressed and others
> > > authorized to receive it. It may contain confidential or legally
> > privileged
> > > information. If you are not the intended recipient you are hereby
> > notified
> > > that any disclosure, copying, distribution or taking any action in
> > reliance
> > > on the contents of this information is strictly prohibited and may be
> > > unlawful. If you have received this communication in error, please
> notify
> > > us immediately by responding to this email and then delete it from your
> > > system. The firm is neither liable for the proper and complete
> > transmission
> > > of the information contained in this communication nor for any delay in
> > its
> > > receipt.
> > >
> >
> >
> >
> > --
> > Regards,
> > Venkatesh
> >
> > “Perfection (in design) is achieved not when there is nothing more to
> add,
> > but rather when there is nothing more to take away.”
> > - Antoine de Saint-Exupéry
> >
>
> --
> _____________________________________________________________
> The information contained in this communication is intended solely for the
> use of the individual or entity to whom it is addressed and others
> authorized to receive it. It may contain confidential or legally privileged
> information. If you are not the intended recipient you are hereby notified
> that any disclosure, copying, distribution or taking any action in reliance
> on the contents of this information is strictly prohibited and may be
> unlawful. If you have received this communication in error, please notify
> us immediately by responding to this email and then delete it from your
> system. The firm is neither liable for the proper and complete transmission
> of the information contained in this communication nor for any delay in its
> receipt.
>



-- 
Regards,
Venkatesh

“Perfection (in design) is achieved not when there is nothing more to add,
but rather when there is nothing more to take away.”
- Antoine de Saint-Exupéry

Re: Dropping support for JDK6 in Apache Hadoop

Posted by Shwetha GS <sh...@inmobi.com>.

I think the restriction is already removed in oozie trunk. 4.1 release
should have the fix


On Wed, Aug 20, 2014 at 11:12 PM, Seetharam Venkatesh <
venkatesh@innerzeal.com> wrote:

> I discussed this with Srikanth and for us the only dependency is Oozie I
> think. Once Oozie moved to 1.7, we should jump and use the new features
> that make a lot of boilerplate code go away.
>
>
> On Tue, Aug 19, 2014 at 9:54 PM, Shwetha GS <sh...@inmobi.com> wrote:
>
> > ---------- Forwarded message ----------
> > From: Arun C Murthy <ac...@hortonworks.com>
> > Date: Tue, Aug 19, 2014 at 11:22 PM
> > Subject: Dropping support for JDK6 in Apache Hadoop
> > To: "dev@hbase.apache.org" <de...@hbase.apache.org>, dev@hive.apache.org,
> > dev@pig.apache.org, dev@oozie.apache.org
> > Cc: "common-dev@hadoop.apache.org" <co...@hadoop.apache.org>
> >
> >
> > [Apologies for the wide distribution.]
> >
> > Dear HBase/Hive/Pig/Oozie communities,
> >
> >  We, over at Hadoop are considering dropping support for JDK6 this year.
> >
> >  As you maybe aware we just released hadoop-2.5.0 and are now considering
> > making the next release i.e. hadoop-2.6.0 the *last* release of Apache
> > Hadoop which supports JDK6. This means, from hadoop-2.7.0 onwards we will
> > not support JDK6 anymore and we *may* start relying on JDK7-specific
> apis.
> >
> >  Now, the above releases a proposal and we do not want to pull the
> trigger
> > without talking to projects downstream - hence the request for you
> > feedback.
> >
> >  Please feel free to forward this to other communities you might deem to
> be
> > at risk from this too.
> >
> > thanks,
> > Arun
> >
> >
> > --
> > CONFIDENTIALITY NOTICE
> > NOTICE: This message is intended for the use of the individual or entity
> to
> > which it is addressed and may contain information that is confidential,
> > privileged and exempt from disclosure under applicable law. If the reader
> > of this message is not the intended recipient, you are hereby notified
> that
> > any printing, copying, dissemination, distribution, disclosure or
> > forwarding of this communication is strictly prohibited. If you have
> > received this communication in error, please contact the sender
> immediately
> > and delete it from your system. Thank You.
> >
> > --
> > _____________________________________________________________
> > The information contained in this communication is intended solely for
> the
> > use of the individual or entity to whom it is addressed and others
> > authorized to receive it. It may contain confidential or legally
> privileged
> > information. If you are not the intended recipient you are hereby
> notified
> > that any disclosure, copying, distribution or taking any action in
> reliance
> > on the contents of this information is strictly prohibited and may be
> > unlawful. If you have received this communication in error, please notify
> > us immediately by responding to this email and then delete it from your
> > system. The firm is neither liable for the proper and complete
> transmission
> > of the information contained in this communication nor for any delay in
> its
> > receipt.
> >
>
>
>
> --
> Regards,
> Venkatesh
>
> “Perfection (in design) is achieved not when there is nothing more to add,
> but rather when there is nothing more to take away.”
> - Antoine de Saint-Exupéry
>

-- 
_____________________________________________________________
The information contained in this communication is intended solely for the 
use of the individual or entity to whom it is addressed and others 
authorized to receive it. It may contain confidential or legally privileged 
information. If you are not the intended recipient you are hereby notified 
that any disclosure, copying, distribution or taking any action in reliance 
on the contents of this information is strictly prohibited and may be 
unlawful. If you have received this communication in error, please notify 
us immediately by responding to this email and then delete it from your 
system. The firm is neither liable for the proper and complete transmission 
of the information contained in this communication nor for any delay in its 
receipt.

Re: Dropping support for JDK6 in Apache Hadoop

Posted by Seetharam Venkatesh <ve...@innerzeal.com>.

I discussed this with Srikanth and for us the only dependency is Oozie I
think. Once Oozie moved to 1.7, we should jump and use the new features
that make a lot of boilerplate code go away.


On Tue, Aug 19, 2014 at 9:54 PM, Shwetha GS <sh...@inmobi.com> wrote:

> ---------- Forwarded message ----------
> From: Arun C Murthy <ac...@hortonworks.com>
> Date: Tue, Aug 19, 2014 at 11:22 PM
> Subject: Dropping support for JDK6 in Apache Hadoop
> To: "dev@hbase.apache.org" <de...@hbase.apache.org>, dev@hive.apache.org,
> dev@pig.apache.org, dev@oozie.apache.org
> Cc: "common-dev@hadoop.apache.org" <co...@hadoop.apache.org>
>
>
> [Apologies for the wide distribution.]
>
> Dear HBase/Hive/Pig/Oozie communities,
>
>  We, over at Hadoop are considering dropping support for JDK6 this year.
>
>  As you maybe aware we just released hadoop-2.5.0 and are now considering
> making the next release i.e. hadoop-2.6.0 the *last* release of Apache
> Hadoop which supports JDK6. This means, from hadoop-2.7.0 onwards we will
> not support JDK6 anymore and we *may* start relying on JDK7-specific apis.
>
>  Now, the above releases a proposal and we do not want to pull the trigger
> without talking to projects downstream - hence the request for you
> feedback.
>
>  Please feel free to forward this to other communities you might deem to be
> at risk from this too.
>
> thanks,
> Arun
>
>
> --
> CONFIDENTIALITY NOTICE
> NOTICE: This message is intended for the use of the individual or entity to
> which it is addressed and may contain information that is confidential,
> privileged and exempt from disclosure under applicable law. If the reader
> of this message is not the intended recipient, you are hereby notified that
> any printing, copying, dissemination, distribution, disclosure or
> forwarding of this communication is strictly prohibited. If you have
> received this communication in error, please contact the sender immediately
> and delete it from your system. Thank You.
>
> --
> _____________________________________________________________
> The information contained in this communication is intended solely for the
> use of the individual or entity to whom it is addressed and others
> authorized to receive it. It may contain confidential or legally privileged
> information. If you are not the intended recipient you are hereby notified
> that any disclosure, copying, distribution or taking any action in reliance
> on the contents of this information is strictly prohibited and may be
> unlawful. If you have received this communication in error, please notify
> us immediately by responding to this email and then delete it from your
> system. The firm is neither liable for the proper and complete transmission
> of the information contained in this communication nor for any delay in its
> receipt.
>



-- 
Regards,
Venkatesh

“Perfection (in design) is achieved not when there is nothing more to add,
but rather when there is nothing more to take away.”
- Antoine de Saint-Exupéry

Fwd: Dropping support for JDK6 in Apache Hadoop

Posted by Shwetha GS <sh...@inmobi.com>.

---------- Forwarded message ----------
From: Arun C Murthy <ac...@hortonworks.com>
Date: Tue, Aug 19, 2014 at 11:22 PM
Subject: Dropping support for JDK6 in Apache Hadoop
To: "dev@hbase.apache.org" <de...@hbase.apache.org>, dev@hive.apache.org,
dev@pig.apache.org, dev@oozie.apache.org
Cc: "common-dev@hadoop.apache.org" <co...@hadoop.apache.org>


[Apologies for the wide distribution.]

Dear HBase/Hive/Pig/Oozie communities,

 We, over at Hadoop are considering dropping support for JDK6 this year.

 As you maybe aware we just released hadoop-2.5.0 and are now considering
making the next release i.e. hadoop-2.6.0 the *last* release of Apache
Hadoop which supports JDK6. This means, from hadoop-2.7.0 onwards we will
not support JDK6 anymore and we *may* start relying on JDK7-specific apis.

 Now, the above releases a proposal and we do not want to pull the trigger
without talking to projects downstream - hence the request for you feedback.

 Please feel free to forward this to other communities you might deem to be
at risk from this too.

thanks,
Arun


--
CONFIDENTIALITY NOTICE
NOTICE: This message is intended for the use of the individual or entity to
which it is addressed and may contain information that is confidential,
privileged and exempt from disclosure under applicable law. If the reader
of this message is not the intended recipient, you are hereby notified that
any printing, copying, dissemination, distribution, disclosure or
forwarding of this communication is strictly prohibited. If you have
received this communication in error, please contact the sender immediately
and delete it from your system. Thank You.

-- 
_____________________________________________________________
The information contained in this communication is intended solely for the 
use of the individual or entity to whom it is addressed and others 
authorized to receive it. It may contain confidential or legally privileged 
information. If you are not the intended recipient you are hereby notified 
that any disclosure, copying, distribution or taking any action in reliance 
on the contents of this information is strictly prohibited and may be 
unlawful. If you have received this communication in error, please notify 
us immediately by responding to this email and then delete it from your 
system. The firm is neither liable for the proper and complete transmission 
of the information contained in this communication nor for any delay in its 
receipt.

Fwd: Dropping support for JDK6 in Apache Hadoop

Posted by Josh Elser <jo...@gmail.com>.

FYI

-------- Original Message --------
Subject: Dropping support for JDK6 in Apache Hadoop
Date: Tue, 19 Aug 2014 10:52:45 -0700
From: Arun C Murthy <ac...@hortonworks.com>
Reply-To: dev@hbase.apache.org
To: dev@hbase.apache.org <de...@hbase.apache.org>, dev@hive.apache.org, 
dev@pig.apache.org, dev@oozie.apache.org
CC: common-dev@hadoop.apache.org <co...@hadoop.apache.org>

[Apologies for the wide distribution.]

Dear HBase/Hive/Pig/Oozie communities,

  We, over at Hadoop are considering dropping support for JDK6 this year.

  As you maybe aware we just released hadoop-2.5.0 and are now 
considering making the next release i.e. hadoop-2.6.0 the *last* release 
of Apache Hadoop which supports JDK6. This means, from hadoop-2.7.0 
onwards we will not support JDK6 anymore and we *may* start relying on 
JDK7-specific apis.

  Now, the above releases a proposal and we do not want to pull the 
trigger without talking to projects downstream - hence the request for 
you feedback.

  Please feel free to forward this to other communities you might deem 
to be at risk from this too.

thanks,
Arun

-- 
CONFIDENTIALITY NOTICE
NOTICE: This message is intended for the use of the individual or entity to
which it is addressed and may contain information that is confidential,
privileged and exempt from disclosure under applicable law. If the reader
of this message is not the intended recipient, you are hereby notified that
any printing, copying, dissemination, distribution, disclosure or
forwarding of this communication is strictly prohibited. If you have
received this communication in error, please contact the sender immediately
and delete it from your system. Thank You.

Re: Dropping support for JDK6 in Apache Hadoop

Posted by Deepak Vohra <dv...@yahoo.com.INVALID>.

Java 7 has been adopted by 65% of developers according to a 2014 survey. 
Java Tools and Technologies Landscape for 2014

  
             
Java Tools and Technologies Landscape for 2014
For the 5th time, ZeroTurnaround's tech detectives at RebelLabs revisit the tools & technologies landscape in Java, collecting data, crunching numbers a...  
View on zeroturnaround.com Preview by Yahoo  
  


________________________________
 From: Matt Foley <ma...@apache.org>
To: "common-dev@hadoop.apache.org" <co...@hadoop.apache.org> 
Cc: dev@hive.apache.org; "dev@hbase.apache.org" <de...@hbase.apache.org>; dev@pig.apache.org; dev@oozie.apache.org 
Sent: Tuesday, August 19, 2014 5:49 PM
Subject: Re: Dropping support for JDK6 in Apache Hadoop
 

Yes, in terms of forward compatibility, my company has been certifying the
current Hadoop-related stack on JDK7 (both Oracle and OpenJDK) for some
time.  No problems there, in our experience.

For stopping supporting JDK6 in the near future, and enabling JDK7 feature
usage, +1.

--Matt


On Tue, Aug 19, 2014 at 2:37 PM, Roman Shaposhnik <rv...@apache.org> wrote:

> FWIW: in Bigtop we've made the switch to JDK7 for the Bigtop
> 0.8.0 release across the board. No major issues so far.
>
> Thanks,
> Roman.
>
> On Tue, Aug 19, 2014 at 10:52 AM, Arun C Murthy <ac...@hortonworks.com>
> wrote:
> > [Apologies for the wide distribution.]
> >
> > Dear HBase/Hive/Pig/Oozie communities,
> >
> >  We, over at Hadoop are considering dropping support for JDK6 this year.
> >
> >  As you maybe aware we just released hadoop-2.5.0 and are now
> considering making the next release i.e. hadoop-2.6.0 the *last* release of
> Apache Hadoop which supports JDK6. This means, from hadoop-2.7.0 onwards we
> will not support JDK6 anymore and we *may* start relying on JDK7-specific
> apis.
> >
> >  Now, the above releases a proposal and we do not want to pull the
> trigger without talking to projects downstream - hence the request for you
> feedback.
> >
> >  Please feel free to forward this to other communities you might deem to
> be at risk from this too.
> >
> > thanks,
> > Arun
> >
> >
> > --
> > CONFIDENTIALITY NOTICE
> > NOTICE: This message is intended for the use of the individual or entity
> to
> > which it is addressed and may contain information that is confidential,
> > privileged and exempt from disclosure under applicable law. If the reader
> > of this message is not the intended recipient, you are hereby notified
> that
> > any printing, copying, dissemination, distribution, disclosure or
> > forwarding of this communication is strictly prohibited. If you have
> > received this communication in error, please contact the sender
> immediately
> > and delete it from your system. Thank You.
>

-- 
CONFIDENTIALITY NOTICE
NOTICE: This message is intended for the use of the individual or entity to 
which it is addressed and may contain information that is confidential, 
privileged and exempt from disclosure under applicable law. If the reader 
of this message is not the intended recipient, you are hereby notified that 
any printing, copying, dissemination, distribution, disclosure or 
forwarding of this communication is strictly prohibited. If you have 
received this communication in error, please contact the sender immediately 
and delete it from your system. Thank You.