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Date: Fri, 7 Aug 2015 14:44:06 +0200
Message-ID: 
 <CALY91SMV9Tbsc_CeVwnCja_=VpLOKYd5bwA-TH8-AXeYtJAfuQ@mail.gmail.com>
Subject: Re: auto_bootstrap=false broken?
From: horschi <horschi@gmail.com>
To: user@cassandra.apache.org
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Hi Jeff,


You=E2=80=99re trying to force your view onto an established ecosystem.
>
It is not my intent to force anyone to do anything. I apologize if my title
was too provocative. I just wanted to clickbait ;-)


It=E2=80=99s not =E2=80=9Cwrong only because its currently bootstrapping=E2=
=80=9D, it=E2=80=99s not
> bootstrapping at all, you told it not to bootstrap.
>
Let me correct myself. It should be: "its wrong because it isn't
bootstrapped". But that does not change what I am proposing: It still
should not serve reads.


=E2=80=98auto_bootstrap=E2=80=99 is the knob that tells cassandra whether o=
r not you want
> to stream data from other replicas when you join the ring. Period. That=
=E2=80=99s
> all it does. If you set it to false, you=E2=80=99re telling cassandra it =
already
> has the data. The switch implies nothing else. There is no option to =E2=
=80=9Cjoin
> the ring but don=E2=80=99t serve reads until I tell you it=E2=80=99s read=
y=E2=80=9D, and changing
> auto-bootstrap to be that is unlikely to ever happen.
>
I know that it does only that. But I would have made a different design
decision (to not serve reads in such a state).


> Don=E2=80=99t want to serve reads? Disable thrift and native proto, start=
 the with
> auto-bootstrap set to whatever you want but thrift and native proto
> disabled, then enable thrift and native proto again to enable reads from
> clients when ready. Until then, make sure you=E2=80=99re using a consiste=
ncy level
> appropriate for your requirements.
>
Of course it can be worked around. I just think its error prone to do that
manually. That is why I was proposing a change.


> You=E2=80=99re mis-using a knob that doesn=E2=80=99t do what you think it=
 does, and is
> unlikely to ever be changed to do what you think it should.
>
I wanted to change the definition of what auto_bootstrap=3Dfalse is. I dont
know if that makes it better or worse ;-)


I hope I did not consume too much of your time. Thanks for all the
responses. I will experiment a bit with write_survey and see if it already
does what I need.

kind regards,
Christian

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<div dir=3D"ltr">Hi Jeff,<div class=3D"gmail_extra"><br><div class=3D"gmail=
_quote"><br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bo=
rder-left:1px #ccc solid;padding-left:1ex"><div style=3D"word-wrap:break-wo=
rd;color:rgb(0,0,0);font-size:14px;font-family:Calibri,sans-serif"><div><di=
v>You=E2=80=99re trying to force your view onto an established ecosystem. <=
/div></div></div></blockquote><div>It is not my intent to force anyone to d=
o anything. I apologize if my title was too provocative. I just wanted to c=
lickbait ;-)<br></div><div><br></div><div><br></div><blockquote class=3D"gm=
ail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-le=
ft:1ex"><div style=3D"word-wrap:break-word;color:rgb(0,0,0);font-size:14px;=
font-family:Calibri,sans-serif"><div><div>It=E2=80=99s not =E2=80=9Cwrong o=
nly because its currently bootstrapping=E2=80=9D, it=E2=80=99s not bootstra=
pping at all, you told it not to bootstrap.=C2=A0</div></div></div></blockq=
uote><div>Let me correct myself. It should be: &quot;its wrong because it i=
sn&#39;t bootstrapped&quot;. But that does not change what I am proposing: =
It still should not serve reads.</div><div><br></div><div><br></div><blockq=
uote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc =
solid;padding-left:1ex"><div style=3D"word-wrap:break-word;color:rgb(0,0,0)=
;font-size:14px;font-family:Calibri,sans-serif"><div>=E2=80=98auto_bootstra=
p=E2=80=99 is the knob that tells cassandra whether or not you want to stre=
am data from other replicas when you join the ring. Period. That=E2=80=99s =
all it does. If you set it to false, you=E2=80=99re telling cassandra it al=
ready has the data. The switch implies nothing else. There is no option to =
=E2=80=9Cjoin the ring but don=E2=80=99t serve reads until I tell you it=E2=
=80=99s ready=E2=80=9D, and changing auto-bootstrap to be that is unlikely =
to ever happen.=C2=A0<br></div></div></blockquote><div>I know that it does =
only that. But I would have made a different design decision (to not serve =
reads in such a state).</div><div><br></div><div>=C2=A0</div><blockquote cl=
ass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;p=
adding-left:1ex"><div style=3D"word-wrap:break-word;color:rgb(0,0,0);font-s=
ize:14px;font-family:Calibri,sans-serif"><div>Don=E2=80=99t want to serve r=
eads? Disable thrift and native proto, start the with auto-bootstrap set to=
 whatever you want but thrift and native proto disabled, then enable thrift=
 and native proto again to enable reads from clients when ready. Until then=
, make sure you=E2=80=99re using a consistency level appropriate for your r=
equirements.<br></div></div></blockquote><div>Of course it can be worked ar=
ound. I just think its error prone to do that manually. That is why I was p=
roposing a change.</div><div><br></div><div>=C2=A0</div><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex"><div style=3D"word-wrap:break-word;color:rgb(0,0,0);font-size=
:14px;font-family:Calibri,sans-serif"><div>You=E2=80=99re mis-using a knob =
that doesn=E2=80=99t do what you think it does, and is unlikely to ever be =
changed to do what you think it should.<br></div></div></blockquote><div>I =
wanted to change the definition of what auto_bootstrap=3Dfalse is. I dont k=
now if that makes it better or worse ;-)</div><div><br></div><div><br></div=
><div>I hope I did not consume too much of your time. Thanks for all the re=
sponses. I will experiment a bit with write_survey and see if it already do=
es what I need.</div><div><br></div><div>kind regards,</div><div>Christian<=
/div><div><br></div></div></div></div>

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