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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: 10px 0 0; margin-top: 0">Hi <a href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=yrodiere" class="user-hover" rel="yrodiere" style="color: #3b73af; text-decoration: none">Yoann Rodière</a>,</p> <p style="margin: 10px 0 0">Thanks for the feedback.</p> <p style="margin: 10px 0 0">I thought of this feature so we could further eliminate the external manual process and allow that hibernate-search to manage this.<br> But you're very right, this external process is needed anyway and making hibernate-search control this would not be good.</p> <p style="margin: 10px 0 0">A real example, is in my current development project with wildfly I am evaluating how to do a manual deployment, make blue-green for this.</p> <p style="margin: 10px 0 0">step 1 - In the first version in production my index will be called for example: </p>
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<pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">String</span> MY_INDEX_NAME=<span class="code-quote" style="color: #009100">"my_index_v1"</span>;
.....
@Indexed(index = myClass.MY_INDEX_NAME)
....
</pre>
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</div> <p style="margin: 10px 0 0">step 2 - I will index through a manual trigger;</p>
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<pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
fullTextEntityManager.createIndexer().startAndWait();
</pre>
</div>
</div> <p style="margin: 10px 0 0">step 3 - I will create an alias manually for my_index;</p>
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<pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
POST /_aliases
{
<span class="code-quote" style="color: #009100">"actions"</span> : [
{ <span class="code-quote" style="color: #009100">"add"</span> : { <span class="code-quote" style="color: #009100">"index"</span> : <span class="code-quote" style="color: #009100">"my_index_v1"</span>, <span class="code-quote" style="color: #009100">"alias"</span> : <span class="code-quote" style="color: #009100">"my_index"</span> } }
]
}
</pre>
</div>
</div> <p style="margin: 10px 0 0">step 4 - When a new version is released with the changed mappings, filters and parsers, I'm going to change the name of my index manually for my_index_v2;<br> <em>Of course all this in a single Node.</em></p>
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<pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">String</span> MY_INDEX_NAME=<span class="code-quote" style="color: #009100">"my_index_v2"</span>;
</pre>
</div>
</div> <p style="margin: 10px 0 0">step 5 - I will index through a manual trigger;</p>
<div class="code 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">
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<pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
fullTextEntityManager.createIndexer().startAndWait();
<span class="code-comment" style="color: #808080">// or with elasticseach reindex
</span>POST _reindex
{
<span class="code-quote" style="color: #009100">"source"</span>: {
<span class="code-quote" style="color: #009100">"index"</span>: <span class="code-quote" style="color: #009100">"my_index_v1"</span>
},
<span class="code-quote" style="color: #009100">"dest"</span>: {
<span class="code-quote" style="color: #009100">"index"</span>: <span class="code-quote" style="color: #009100">"my_index_v2"</span>
}
}
</pre>
</div>
</div> <p style="margin: 10px 0 0">step 6 - I make a blue-green of the index. I change manually the alias "my_index" to index "my_index_v2";</p>
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<pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
POST /_aliases
{
<span class="code-quote" style="color: #009100">"actions"</span>: [
{ <span class="code-quote" style="color: #009100">"remove"</span>: { <span class="code-quote" style="color: #009100">"index"</span>: <span class="code-quote" style="color: #009100">"my_index_v1"</span>, <span class="code-quote" style="color: #009100">"alias"</span>: <span class="code-quote" style="color: #009100">"my_index"</span> }},
{ <span class="code-quote" style="color: #009100">"add"</span>: { <span class="code-quote" style="color: #009100">"index"</span>: <span class="code-quote" style="color: #009100">"my_index_v2"</span>, <span class="code-quote" style="color: #009100">"alias"</span>: <span class="code-quote" style="color: #009100">"my_index"</span> }}
]
}
</pre>
</div>
</div> <p style="margin: 10px 0 0">step 7 - After everything is OK, I make blue-green with my load balancer, pointing to the new node.</p> <p style="margin: 10px 0 0">And so on in the next versions.</p> <p style="margin: 10px 0 0">I thought of doing this inside hibernate-search, but as you said, that responsibility should not be hibernate-search.</p> <p style="margin: 10px 0 0">Maybe we could provide an configuration option to add a suffix to every index, But I do not know if we really need it, it would be just a cherry on the cake.</p> <p style="margin: 10px 0 0">Regards.<br> Leandro K. de Freitas</p> </td>
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