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Versions: OS Centos 6.8
<div class=""> PgPool 3.5.0</div>
<div class=""> Postgres 9.4.4</div>
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<div class="">Intermittently we see these errors in the pgpool log file:</div>
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<div style="margin: 0px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2017-04-17 20:40:54: pid 23448: ERROR: unable to read data from frontend</span></div>
<div style="margin: 0px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2017-04-17 20:40:54: pid 23448: DETAIL: socket read failed with an error "Connection reset by peer"</span></div>
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<div class=""><span style="font-variant-ligatures: no-common-ligatures" class="">On the client it looks like:</span></div>
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<div class="">server closed the connection unexpectedly</div>
<div class=""> This probably means the server terminated abnormally</div>
<div class=""> before or while processing the request.</div>
<div class="">The connection to the server was lost. Attempting reset:</div>
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<div class="">Client uses Ruby/Rails to connect, but I see the same issue using psql.</div>
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