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From: Till Rohrmann <trohrmann@apache.org>
Date: Fri, 21 Apr 2017 09:48:14 +0200
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Message-ID: <CAC27z=PSkXmBbtxvMy9CE3J6p1JGKie6P_OyY1Bc-aFJ1TXMMA@mail.gmail.com>
Subject: Re: Using FlinkML from Java?
To: Steve Jerman <steve@kloudspot.com>
Cc: user <user@flink.apache.org>
Content-Type: multipart/alternative; boundary=001a1147e30246a406054da87d9a
archived-at: Fri, 21 Apr 2017 07:48:58 -0000

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Hi Steve,

unfortunately, FlinkML's pipeline mechanism depends on Scala's implicit
value feature. Therefore, FlinkML can only be used with Scala if you don't
want to construct the pipelines manually (which I wouldn't recommend).

Cheers,
Till

On Thu, Apr 20, 2017 at 6:56 PM, Steve Jerman <steve@kloudspot.com> wrote:

> Hi Folks,
>
> I=E2=80=99m trying to use FlinkML 1.2 from Java =E2=80=A6 getting this:
>
> SVM svm =3D new SVM()
>   .setBlocks(env.getParallelism())
>   .setIterations(100)
>   .setRegularization(0.001)
>   .setStepsize(0.1)
>   .setSeed(42);
>
>
> svm.fit(labelledTraining);
>
> The type org.apache.flink.api.scala.DataSet cannot be resolved. It is
> indirectly referenced from required .class files.
>
> Are there any tricks required to get it running? Or is Java not supported=
?
>
> Steve
>

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Content-Type: text/html; charset=UTF-8
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<div dir=3D"ltr">Hi Steve,<div><br></div><div>unfortunately, FlinkML&#39;s =
pipeline mechanism depends on Scala&#39;s implicit value feature. Therefore=
, FlinkML can only be used with Scala if you don&#39;t want to construct th=
e pipelines manually (which I wouldn&#39;t recommend).</div><div><br></div>=
<div>Cheers,</div><div>Till</div></div><div class=3D"gmail_extra"><br><div =
class=3D"gmail_quote">On Thu, Apr 20, 2017 at 6:56 PM, Steve Jerman <span d=
ir=3D"ltr">&lt;<a href=3D"mailto:steve@kloudspot.com" target=3D"_blank">ste=
ve@kloudspot.com</a>&gt;</span> wrote:<br><blockquote 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">
Hi Folks,
<div><br>
</div>
<div>I=E2=80=99m trying to use FlinkML 1.2 from Java =E2=80=A6 getting this=
:</div>
<div><br>
</div>
<div>
<div style=3D"margin:0px;font-size:11px;line-height:normal;font-family:Mona=
co">
<span class=3D"m_1078308316916015427Apple-tab-span" style=3D"white-space:pr=
e-wrap"></span>SVM <span style=3D"color:#7e504f">
svm</span> =3D <span style=3D"color:#931a68">new</span> SVM()</div>
<div style=3D"margin:0px;font-size:11px;line-height:normal;font-family:Mona=
co">
<span class=3D"m_1078308316916015427Apple-tab-span" style=3D"white-space:pr=
e-wrap"></span>=C2=A0 .setBlocks(<span style=3D"color:#7e504f">env</span>.g=
etParallelism(<wbr>))</div>
<div style=3D"margin:0px;font-size:11px;line-height:normal;font-family:Mona=
co">
<span class=3D"m_1078308316916015427Apple-tab-span" style=3D"white-space:pr=
e-wrap"></span>=C2=A0 .setIterations(100)</div>
<div style=3D"margin:0px;font-size:11px;line-height:normal;font-family:Mona=
co">
<span class=3D"m_1078308316916015427Apple-tab-span" style=3D"white-space:pr=
e-wrap"></span>=C2=A0 .setRegularization(0.001)</div>
<div style=3D"margin:0px;font-size:11px;line-height:normal;font-family:Mona=
co">
<span class=3D"m_1078308316916015427Apple-tab-span" style=3D"white-space:pr=
e-wrap"></span>=C2=A0 .setStepsize(0.1)</div>
<div style=3D"margin:0px;font-size:11px;line-height:normal;font-family:Mona=
co">
<span class=3D"m_1078308316916015427Apple-tab-span" style=3D"white-space:pr=
e-wrap"></span>=C2=A0 .setSeed(42);</div>
<p style=3D"margin:0px;font-size:11px;line-height:normal;font-family:Monaco=
;min-height:15px">
<span class=3D"m_1078308316916015427Apple-tab-span" style=3D"white-space:pr=
e-wrap"></span><br class=3D"m_1078308316916015427webkit-block-placeholder">
</p>
<div style=3D"margin:0px;font-size:11px;line-height:normal;font-family:Mona=
co;color:rgb(126,80,79)">
<span style=3D"color:#000000"><span class=3D"m_1078308316916015427Apple-tab=
-span" style=3D"white-space:pre-wrap"></span></span><span style=3D"text-dec=
oration:underline">svm</span><span style=3D"text-decoration:underline;color=
:#000000">.fit(</span><span style=3D"text-decoration:underline">labelledTra=
ining</span><span style=3D"text-decoration:underline;color:#000000">)</span=
><span style=3D"color:#000000">;</span></div>
</div>
<div><br>
</div>
<div>
<div>The type org.apache.flink.api.scala.<wbr>DataSet cannot be resolved. I=
t is indirectly referenced from required .class files.</div>
</div>
<div><br>
</div>
<div>Are there any tricks required to get it running? Or is Java not suppor=
ted?</div><span class=3D"HOEnZb"><font color=3D"#888888">
<div><br>
</div>
<div>Steve</div>
</font></span></div>

</blockquote></div><br></div>

--001a1147e30246a406054da87d9a--