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<td class="page-title-pattern-first-line " style="padding: 0; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://hibernate.atlassian.net/browse/HSEARCH" style="color: #3b73af; text-decoration: none">Hibernate Search</a> / <a href="https://hibernate.atlassian.net/browse/HSEARCH-2756" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-a5d7398f-3c7b-4605-9fc0-b42561d5a184" height="16" width="16" border="0" align="absmiddle" alt="Task" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HSEARCH-2756" style="color: #3b73af; text-decoration: none">HSEARCH-2756</a> </td>
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<td style="vertical-align: top;; padding: 0; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://hibernate.atlassian.net/browse/HSEARCH-2756" style="color: #3b73af; text-decoration: none">Improve naming schemes of Elasticsearch configuration properties</a> </span> </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> elasticsearch </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Created:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 02/Jun/2017 02:12 AM </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Fix Versions:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 6 </td>
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<td class="has-icon" style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-static-major-ccd92fa6-6f3e-45b9-a220-f76f2f6455a7" height="16" width="16" border="0" align="absmiddle" alt="Major" style="vertical-align: text-bottom"> Major </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="yrodiere" id="email_yrodiere" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=yrodiere" style="color:#6c797f;; color: #3b73af; text-decoration: none">Yoann Rodière</a> </td>
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<table class="text-paragraph-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0; mso-table-rspace: 0; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 2px">
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0; margin-top: 0">I wonder whether we should do this in 5.8 or 6... Clearly it's a breaking change, but Elasticsearch integration being experimental, we could do it. And it would allow to prepare users for changes coming in 6.<br> On the other hand, the public material (presentations, etc.) out there would instantly become obsolete, referring to nonexistent configuration properties...</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Currently:</p>
<ol>
<li>Some options must be prefixed with either <tt>hibernate.search.default.elasticsearch</tt> or <tt>hibernate.search.indexname.elasticsearch</tt> (refreshAfterWrite, schema management, wait timeout, ...)</li>
<li>Some options must be prefixed with <tt>hibernate.search.default.elasticsearch</tt>, but we envisioned to make them configurable per index when we allow connecting to multiple elasticsearch clusters (these are the client options)</li>
<li>Some options must be prefixed with <tt>hibernate.search.elasticsearch</tt> (query options + analysis definition provider)</li>
</ol> <h4 style="margin: 10px 0 0; font-size: 14px; line-height: 1.500; margin: 20px 0 0"><a name="Category1" style="color: #3b73af; text-decoration: none"></a>Category 1</h4> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Category 1 seems fine.</p> <h4 style="margin: 10px 0 0; font-size: 14px; line-height: 1.500; margin: 20px 0 0"><a name="Category2" style="color: #3b73af; text-decoration: none"></a>Category 2</h4> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Category 2 is problematic in my opinion, because when we allow connecting to multiple elasticsearch clusters we'll probably want to allow multiple index managers to use the same client. Which means in particular that we won't be able to configure those options using a <tt>hibernate.search.indexname.elasticsearch</tt> prefix: we'll probably want something like this instead:</p>
<div class="preformatted panel" style="border-width: 1px;; border: 1px solid #cccccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #cccccc; -moz-border-radius: 3px; border-radius: 3px; margin: 9px 0">
<div class="preformattedContent panelContent" style="padding: 9px 12px">
<pre style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal; white-space: pre; word-break: normal; word-wrap: break-word; word-break: break-all; white-space: pre-wrap">hibernate.search.backend.backendname.type elasticsearch
hibernate.search.backend.backendname.host http://localhost:9200
hibernate.search.backend.backendname.username foo
hibernate.search.backend.backendname.password bar
hibernate.search.backend.backendname.discovery.enabled true
hibernate.search.backend.backendname.discovery.refresh_interval 10
hibernate.search.myIndex.backend backendname
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">We could optionally use a ".elasticsearch" in the prefix for backend properties, but that seems unnecessary. </p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">But here's the catch: this is totally incompatible with the current prefixes used in properties.<br> If, on the other hand, we switched to something like "hibernate.search.backend.elasticsearch." as a prefix for category 2 properties, migration would be way easier once we allow multiple backends: once we introduce proper backend concepts into Hibernate Search, users would only have to add a "type" property to their backend and replace the "type" property of their indexes with a "backend" property". For instance this:</p>
<div class="preformatted panel" style="border-width: 1px;; border: 1px solid #cccccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #cccccc; -moz-border-radius: 3px; border-radius: 3px; margin: 9px 0">
<div class="preformattedContent panelContent" style="padding: 9px 12px">
<pre style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal; white-space: pre; word-break: normal; word-wrap: break-word; word-break: break-all; white-space: pre-wrap">hibernate.search.backend.elasticsearch.host http://localhost:9200
hibernate.search.backend.elasticsearch.username foo
hibernate.search.backend.elasticsearch.password bar
hibernate.search.backend.elasticsearch.discovery.enabled true
hibernate.search.backend.elasticsearch.discovery.refresh_interval 10
hibernate.search.myIndex.type elasticsearch
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Would become that:</p>
<div class="preformatted panel" style="border-width: 1px;; border: 1px solid #cccccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #cccccc; -moz-border-radius: 3px; border-radius: 3px; margin: 9px 0">
<div class="preformattedContent panelContent" style="padding: 9px 12px">
<pre style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal; white-space: pre; word-break: normal; word-wrap: break-word; word-break: break-all; white-space: pre-wrap">hibernate.search.backend.elasticsearch.type elasticsearch
hibernate.search.backend.elasticsearch.host http://localhost:9200
hibernate.search.backend.elasticsearch.username foo
hibernate.search.backend.elasticsearch.password bar
hibernate.search.backend.elasticsearch.discovery.enabled true
hibernate.search.backend.elasticsearch.discovery.refresh_interval 10
hibernate.search.myIndex.backend elasticsearch
</pre>
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</div> <h4 style="margin: 10px 0 0; font-size: 14px; line-height: 1.500; margin: 20px 0 0"><a name="Category3" style="color: #3b73af; text-decoration: none"></a>Category 3</h4> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Finally, category 3 raises another issue: they are very few, and inconsistent with other properties. Moreover, as long as we don't allow queries to span multiple Elasticsearch clusters (and I don't think we should, ever), these properties could be made backend-specific (category 2). But that would require changing their prefix...</p> </td>
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