<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On 26 Sep 2012, at 08:28, Bela Ban wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Hi Mircea,<br><br>I think we need a 3rd option in addition to a retry interval and a <br>number of attempts, to take a site offline: a min-time (or whatever we <br>want to call it).<br><br>Say we have retry-interval=1000 and maxRetries=5. This means that if we <br>get a SITE-UNREACHABLE 5 times for a given site, we declare that site <br>offline and cease sending requests to it.<br><br>However, if we have 5 different threads sending requests to the site, <br>then each of them will increment the counter and thus we take the site <br>offline after 1 second !<br></div></blockquote>+1, well spotted!<br><br><blockquote type="cite"><div>That's where min-time comes in: we should wait at least min-time until <br>we take any site offline, even if maxRetries has been exceeded.<br><br>Example: min-time=60000 (ms), maxRetries=10, retryInterval=1000 (ms)<br></div></blockquote><div>We don't have a built in retry mechanism, are you referring to the one in jgroups?</div><div>Or to add a retry mechanism for xsite operations as well?</div><blockquote type="cite"><div><br>If we have 20 threads sending requests to site SFO (which is down), then <br>we might have numRetries=20 after 10 seconds, and perhaps numRetries=60 <br>after 50 seconds. But only once 60 seconds have elapsed do we take SFO <br>offline.<br><br>The main reason for min-time would be to prevent taking a site offline <br>during a short period of time when the site master changes and multiple <br>threads incrementing numRetries in short order.<br><br></div></blockquote>+1<br><blockquote type="cite"><div>-- <br>Bela Ban, JGroups lead (<a href="http://www.jgroups.org">http://www.jgroups.org</a>)<br>_______________________________________________<br>infinispan-dev mailing list<br><a href="mailto:infinispan-dev@lists.jboss.org">infinispan-dev@lists.jboss.org</a><br>https://lists.jboss.org/mailman/listinfo/infinispan-dev<br></div></blockquote></div><br><div apple-content-edited="true">
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Cheers,</div><div>-- <br>Mircea Markus</div><div>Infinispan lead (<a href="http://www.infinispan.org">www.infinispan.org</a>)</div><div><br></div></div></span></div></span></div></span></div></span><br class="Apple-interchange-newline"></span><br class="Apple-interchange-newline">
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