<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Feb 12, 2017 at 2:56 PM, Avi Weinberg <span dir="ltr"><<a href="mailto:AviW@gilat.com" target="_blank">AviW@gilat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" link="#0563C1" vlink="#954F72">
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<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="color:#1f497d">Thank for the quick reply.<u></u><u></u></span></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="color:#1f497d">Is there a way to bypass this unwanted failover problem or to minimize it in the current version?</span></p></div></div></blockquote><div><br></div><div>This was basically a random behavior and unfortunately I can't think of a simple way to reliably bypass the issue. But I have pushed the fix for and you can try by building the Pgpool-II from source if you don't want to wait until the next minor release which is expected around the end of current month. </div><div><br></div><div>Thanks</div><div>Best regards</div><div>Muhammad Usama</div><div><br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="EN-US" link="#0563C1" vlink="#954F72"><div class="m_-8262800804382665603WordSection1"><p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="color:#1f497d">
<u></u><u></u></span></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="color:#1f497d">Thanks
<u></u><u></u></span></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="color:#1f497d">Avi<u></u><u></u></span></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="color:#1f497d"><u></u> <u></u></span></p>
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<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><b>From:</b> Muhammad Usama [mailto:<a href="mailto:m.usama@gmail.com" target="_blank">m.usama@gmail.com</a>]
<br>
<b>Sent:</b> Thursday, February 09, 2017 8:39 PM<br>
<b>To:</b> Avi Weinberg <<a href="mailto:AviW@gilat.com" target="_blank">AviW@gilat.com</a>><br>
<b>Cc:</b> <a href="mailto:pgpool-general@pgpool.net" target="_blank">pgpool-general@pgpool.net</a><br>
<b>Subject:</b> Re: [pgpool-general: 5315] pg_terminate_backend -> postmaster on DB node 1 was shutdown by administrative command<u></u><u></u></p>
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<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><u></u> <u></u></p>
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<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">Apparently their is an issue in Pgpool that is causing this problem. I am looking into this and will update you with the findings.<span style="font-size:12.0pt"><u></u><u></u></span></p>
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<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><u></u> <u></u></p>
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<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">Thanks<u></u><u></u></p>
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<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">Best regards <u></u><u></u></p>
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<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">Muhammad Usama <u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt;text-align:left;direction:ltr;unicode-bidi:embed">
<br>
On 09-Feb-2017, at 2:34 PM, Avi Weinberg <<a href="mailto:AviW@gilat.com" target="_blank">AviW@gilat.com</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="font-family:"Arial",sans-serif">Hi all,</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="font-family:"Arial",sans-serif"> </span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="font-family:"Arial",sans-serif">With pgpool v 3.6.1 when we use the VIP and port 9999 we see that pgpool is setting the flag, but still performing failover. What are
we doing wrong?</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="font-family:"Arial",sans-serif"> </span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="font-family:"Arial",sans-serif">Thanks</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="font-family:"Arial",sans-serif">Avi</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="font-family:"Arial",sans-serif"> </span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="font-family:"Arial",sans-serif"> </span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="font-family:"Arial",sans-serif">The command :</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="font-family:"Arial",sans-serif">psql -h 172.18.255.40 -U postgres -p 9999 -t -c "select pg_terminate_backend(22755)"</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="font-family:"Arial",sans-serif"> </span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="font-family:"Arial",sans-serif"> </span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="font-family:"Arial",sans-serif">The log:</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>:
</span>pid 25368: LOG: child process with pid: 26073 exits with status 256<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:31:01:
</span>pid 25368: LOG: fork a new child process with pid: 27342<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:31:11:
</span>pid 25368: LOG: child process with pid: 26076 exits with status 256<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:31:11:
</span>pid 25368: LOG: fork a new child process with pid: 27357<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:32:21:
</span>pid 25368: LOG: child process with pid: 26077 exits with status 256<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:32:21:
</span>pid 25368: LOG: fork a new child process with pid: 27492<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:32:42:
</span>pid 25368: LOG: child process with pid: 26074 exits with status 256<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:32:42:
</span>pid 25368: LOG: fork a new child process with pid: 27522<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39<span style="background:yellow">:
</span></span><span style="background:yellow">pid 27522: LOG: found the pg_terminate_backend request for backend pid:22755 on backend node:1</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif;background:yellow"><span dir="RTL"></span>2017-02-09 05:33:39:
</span><span style="background:yellow">pid 27522: DETAIL: setting the connection flag</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif;background:yellow"><span dir="RTL"></span>2017-02-09 05:33:39:
</span><span style="background:yellow">pid 26064: LOG: reading and processing packets</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif;background:yellow"><span dir="RTL"></span>2017-02-09 05:33:39:
</span><span style="background:yellow">pid 26064: DETAIL: postmaster on DB node 1 was shutdown by administrative command</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 26064: LOG: received degenerate backend request for node_id: 1 from pid [26064<span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>]</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 26064: LOG: received degenerate backend request for node_id: 1 from pid [26064<span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>]</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: LOG: new IPC connection received<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: LOG: watchdog received the failover command from local pgpool-II on IPC interface<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: LOG: watchdog is processing the failover command [DEGENERATE_BACKEND_REQUEST] received from local pgpool-II on IPC interface<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: LOG: forwarding the failover request [DEGENERATE_BACKEND_REQUEST] to all alive nodes<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: DETAIL: watchdog cluster currently has 1 connected remote nodes<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: LOG: new IPC connection received<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: LOG: received the failover command lock request from local pgpool-II on IPC interface<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: LOG: local pgpool-II node "<a href="http://172.18.255.41:9999" target="_blank">172.18.255.41:9999</a> Linux h1-nms" is requesting to become a lock holder for failover ID: 88<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: LOG: local pgpool-II node "<a href="http://172.18.255.41:9999" target="_blank">172.18.255.41:9999</a> Linux h1-nms" is the lock holder<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25368: LOG: starting degeneration. shutdown host 172.18.255.42(5432<span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>)</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: LOG: received the failover command lock request from remote pgpool-II node "<a href="http://172.18.255.42:9999" target="_blank">172.18.255.42:9999</a> Linux h2-nms<span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>"</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: LOG: remote pgpool-II node "<a href="http://172.18.255.42:9999" target="_blank">172.18.255.42:9999</a> Linux h2-nms" is requesting to become a lock holder for failover ID: 88<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: LOG: lock holder request denied to remote pgpool-II node "<a href="http://172.18.255.42:9999" target="_blank">172.18.255.42:9999</a> Linux h2-nms<span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>"</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: DETAIL: local pgpool-II node "<a href="http://172.18.255.41:9999" target="_blank">172.18.255.41:9999</a> Linux h1-nms" is already holding the locks<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: LOG: received the failover command lock request from remote pgpool-II node "<a href="http://172.18.255.42:9999" target="_blank">172.18.255.42:9999</a> Linux h2-nms<span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>"</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: LOG: remote pgpool-II node "<a href="http://172.18.255.42:9999" target="_blank">172.18.255.42:9999</a> Linux h2-nms" is requesting to become a lock holder for failover ID: 88<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: LOG: lock holder request denied to remote pgpool-II node "<a href="http://172.18.255.42:9999" target="_blank">172.18.255.42:9999</a> Linux h2-nms<span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>"</span><u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25370: DETAIL: local pgpool-II node "<a href="http://172.18.255.41:9999" target="_blank">172.18.255.41:9999</a> Linux h1-nms" is already holding the locks<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25368: LOG: Restart all children<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 26008: LOG: child process received shutdown request signal 3<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 25368: LOG: execute command: /etc/pgpool/failover.sh 1 172.18.255.42 5432 /postgres_db/data 0 0 172.18.255.41 1 5432 /postgres_db/data > AAA_failover_called.log<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 26011: LOG: child process received shutdown request signal 3<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span>2017-02-09 05:33:39:
</span>pid 26009: LOG: child process received shutdown request signal 3<u></u><u></u></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span dir="RTL"></span><span lang="HE" dir="RTL" style="font-family:"Arial",sans-serif"><span dir="RTL"></span> </span><u></u><u></u></p>
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<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><span style="font-size:12.0pt;font-family:"Times New Roman",serif">______________________________<wbr>_________________<br>
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IMPORTANT - This email and any attachments is intended for the above named addressee(s), and may contain information which is confidential or privileged. If you are not the intended recipient, please inform the sender immediately and delete this email: you
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