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List:       openjdk-nio-dev
Subject:    RE: RFR(S): 8223597: jdk/nio/zipfs/ZipFSTester.java RuntimeException: CHECK_FAILED! (getAttribute.cr
From:       "Langer, Christoph" <christoph.langer () sap ! com>
Date:       2019-05-14 8:22:14
Message-ID: AM6PR02MB5192CA102FD6E12B5E7F498B8A080 () AM6PR02MB5192 ! eurprd02 ! prod ! outlook ! com
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Thanks, Lance.

From: Lance Andersen <lance.andersen@oracle.com>
Sent: Montag, 13. Mai 2019 19:00
To: Langer, Christoph <christoph.langer@sap.com>
Cc: core-libs-dev <core-libs-dev@openjdk.java.net>; nio-dev <nio-dev@openjd=
k.java.net>
Subject: Re: RFR(S): 8223597: jdk/nio/zipfs/ZipFSTester.java RuntimeExcepti=
on: CHECK_FAILED! (getAttribute.crc <entries20> failed 6af4413c vs 0 ...)

Hi Christoph,

The change seems reasonable.

On May 13, 2019, at 8:14 AM, Langer, Christoph <christoph.langer@sap.com<ma=
ilto:christoph.langer@sap.com>> wrote:

Hi,

please review this fix of a regression in zipfs after JDK-8222532 [0].

Bug: https://bugs.openjdk.java.net/browse/JDK-8223597
Webrev: http://cr.openjdk.java.net/~clanger/webrevs/8223597.0/

The issue occurs when an empty file/channel is persisted into a zip file. T=
he entry had already been compressed with CRC of 0 at the time the output s=
tream to the zipfs was closed. But when the Entry is eventually synced to t=
he zip file, this is not detected and the bytes get compressed again.

The test was adapted to reliably provoke this intermittent error. In the te=
st I also suppressed printout of an expected Exception to avoid some distra=
ction when reading its JTR files.

Thanks
Christoph

[0] https://bugs.openjdk.java.net/browse/JDK-8222532

[cid:image001.gif@01D50A3E.E551EFA0]<http://oracle.com/us/design/oracle-ema=
il-sig-198324.gif>

<http://oracle.com/us/design/oracle-email-sig-198324.gif>Lance Andersen| Pr=
incipal Member of Technical Staff | +1.781.442.2037
Oracle Java Engineering
1 Network Drive
Burlington, MA 01803
Lance.Andersen@oracle.com<mailto:Lance.Andersen@oracle.com>





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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Thanks, \
Lance.<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="mso-fareast-language:EN-US"><o:p>&nbsp;</o:p></span></p> <div \
style="border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt"> <div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Lance \
Andersen &lt;lance.andersen@oracle.com&gt; <br>
<b>Sent:</b> Montag, 13. Mai 2019 19:00<br>
<b>To:</b> Langer, Christoph &lt;christoph.langer@sap.com&gt;<br>
<b>Cc:</b> core-libs-dev &lt;core-libs-dev@openjdk.java.net&gt;; nio-dev \
&lt;nio-dev@openjdk.java.net&gt;<br> <b>Subject:</b> Re: RFR(S): 8223597: \
jdk/nio/zipfs/ZipFSTester.java RuntimeException: CHECK_FAILED! (getAttribute.crc \
&lt;entries20&gt; failed 6af4413c vs 0 ...)<o:p></o:p></span></p> </div>
</div>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">Hi Christoph,<o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class="MsoNormal">The change seems reasonable.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal">On May 13, 2019, at 8:14 AM, Langer, Christoph &lt;<a \
href="mailto:christoph.langer@sap.com">christoph.langer@sap.com</a>&gt; \
wrote:<o:p></o:p></p> </div>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div>
<p class="MsoNormal">Hi,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span lang="EN-US">please review this fix of a regression in \
zipfs after JDK-8222532 [0].</span><o:p></o:p></p> </div>
<div>
<p class="MsoNormal"><span lang="EN-US">&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span lang="EN-US">Bug:<span \
class="apple-converted-space">&nbsp;</span><a \
href="https://bugs.openjdk.java.net/browse/JDK-8223597"><span \
style="color:#954F72">https://bugs.openjdk.java.net/browse/JDK-8223597</span></a></span><o:p></o:p></p>
 </div>
<div>
<p class="MsoNormal"><span lang="EN-US">Webrev:<span \
class="apple-converted-space">&nbsp;</span><a \
href="http://cr.openjdk.java.net/~clanger/webrevs/8223597.0/"><span \
style="color:#954F72">http://cr.openjdk.java.net/~clanger/webrevs/8223597.0/</span></a></span><o:p></o:p></p>
 </div>
<div>
<p class="MsoNormal"><span lang="EN-US">&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span lang="EN-US">The issue occurs when an empty file/channel \
is persisted into a zip file. The entry had already been compressed with CRC of 0 at \
the time the output stream to the zipfs was closed. But when the Entry is eventually \
synced  to the zip file, this is not detected and the bytes get compressed \
again.</span><o:p></o:p></p> </div>
<div>
<p class="MsoNormal"><span lang="EN-US">&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span lang="EN-US">The test was adapted to reliably provoke this \
intermittent error. In the test I also suppressed printout of an expected Exception \
to avoid some distraction when reading its JTR files.</span><o:p></o:p></p> </div>
</div>
</blockquote>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div>
<p class="MsoNormal"><span lang="EN-US">&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span lang="EN-US">Thanks</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span lang="EN-US">Christoph</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span lang="EN-US">&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span lang="EN-US">[0]<span \
class="apple-converted-space">&nbsp;</span><a \
href="https://bugs.openjdk.java.net/browse/JDK-8222532"><span \
style="color:#954F72">https://bugs.openjdk.java.net/browse/JDK-8222532</span></a></span><o:p></o:p></p>
 </div>
</div>
</blockquote>
</div>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div>
<p class="MsoNormal"><span class="apple-style-span"><span \
style="font-size:12.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#666666"><a \
href="http://oracle.com/us/design/oracle-email-sig-198324.gif"><span \
style="text-decoration:none"><img border="0" width="114" height="26" \
style="width:1.1875in;height:.2708in" id="_x0034_79672C7-CA8E-4C3F-B79A-4346BA31CB41" \
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class="apple-style-span"><span \
style="font-size:12.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#666666"><o:p></o:p></span></span></p>
 <div>
<p class="MsoNormal"><span \
style="font-size:13.5pt;font-family:&quot;Helvetica&quot;,sans-serif;color:black"><a \
href="http://oracle.com/us/design/oracle-email-sig-198324.gif"><br> </a></span><span \
style="font-size:12.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#666666">Lance \
Andersen| Principal Member of Technical Staff | &#43;1.781.442.2037<br> </span><span \
style="font-size:12.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:red">Oracle</span><span \
style="font-size:12.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#666666">&nbsp;Java \
Engineering&nbsp;<br> 1 Network Drive&nbsp;<br>
Burlington, MA 01803<br>
</span><span style="font-size:13.5pt;font-family:&quot;Helvetica&quot;,sans-serif;color:black"><a \
href="mailto:Lance.Andersen@oracle.com"><span \
style="font-size:12.0pt;font-family:&quot;Verdana&quot;,sans-serif">Lance.Andersen@oracle.com</span></a></span><span \
style="font-size:13.5pt;font-family:&quot;Helvetica&quot;,sans-serif;color:black"><o:p></o:p></span></p>
 </div>
<div>
<p class="MsoNormal"><span \
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 <br>
</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
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