HBASE-21879 Read HFile ’s Block into ByteBuffer directly. 1. Background For reducing the Java GC impact to p99/p999 RPC latency, HBase 2.x has made an offheap read and write path. The KV are allocated BucketCache firstly, if the Cache misses, go to the HFile and read the corresponding block. The workflow: reading block from cache OR sending cells to client, is basically not involved in heap memory allocations that the process of reading the Block from HFile is still copied to the heap firstly, the heap block won’t free unless the WriterThread of BucketCache flushes the Block to offheap IOEngine successfully

. . . 64 Heading identifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Block quotations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Verbatim (code) . . 72 Bullet lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Block content in list items . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Ordered lists . . 128 On individual slides (reveal.js, pptx) . . . . . . . . . . . . . . . . . . . . . . 129 On the title slide (reveal.js, pptx) . . . . . . . . . . . . . . . . . . . . . . . . 129 v Contents Example

python manage.py createsuperuser docker compose up -d After selecting Next, you will add in your title and some basic text content for the new page, click Create. Here is your newly created page. Publish libraries we use in the template. {% page_attribute "page_title" %} extracts the page’s page_title attribute. {% render_block "css" %} and {% render_block "js" %} are Sekizai template tags that load blocks of JavaScript, and requires these two tags. We recommended placing {% render_block "css" %} just before the tag, and and {% render_block "js" %} tag just before the . {% cms_toolbar %} renders the

navigation menus Apphooks Complex apphook configuration Working with templates Extending the page & title models Extending the Toolbar Testing Your Extensions Placeholders outside the CMS Caching Frontend placeholder "splashbox" %} to the template’s HTML structure. You can add it anywhere, for example: {% block content %}

{% placeholder "feature" %} and {% placeholder "splashbox" %} inside the {% block content %} section. For example: {% block content %} {% placeholder "feature" %} {% placeholder "content" %} to have a section on your website which should be the same on every single page, such as a footer block. You could hard-code your footer into the template, but it would be nicer to be able to manage it element: {% render_block "js" %} Save the template and return to your browser. Refresh any page in Structure mode

{% placeholder "feature" %} and {% placeholder "splashbox" %} inside the {% block content %} section. For example: {% block content %} {% placeholder "feature" %} {% placeholder "content" %} {% placeholder to have a section on your website which should be the same on every single page, such as a footer block. You could hard-code your footer into the template, but it would be nicer to be able to manage it the end of the HTML element: {% render_block "js" %} Save the template and return to your browser. Refresh any page in Structure mode,

{% placeholder "feature" %} and {% placeholder "splashbox" %} inside the {% block content %} section. For example: {% block content %} {% placeholder "feature" %} {% placeholder "content" %} to have a section on your website which should be the same on every single page, such as a footer block. You could hard-code your footer into the template, but it would be nicer to be able to manage it element: {% render_block "js" %} Save the template and return to your browser. Refresh any page in Structure mode

{% placeholder "feature" %} and {% placeholder "splashbox" %} inside the {% block content %} section. For example: {% block content %} {% placeholder "feature" %} {% placeholder "content" %} to have a section on your website which should be the same on every single page, such as a footer block. You could hard-code your footer into the template, but it would be nicer to be able to manage it element: {% render_block "js" %} Save the template and return to your browser. Refresh any page in Structure mode

{% placeholder "feature" %} and {% placeholder "splashbox" %} inside the {% block content %} section. For example: {% block content %} {% placeholder "feature" %} {% placeholder "content" %} {% placeholder to have a section on your website which should be the same on every single page, such as a footer block. You could hard-code your footer into the template, but it would be nicer to be able to manage it django cms Documentation, Release 3.9.0 {% render_block "js" %} Save the template and return to your browser. Refresh any page in Structure mode,

{% placeholder "feature" %} and {% placeholder "splashbox" %} inside the {% block content %} section. For example: {% block content %} {% placeholder "feature" %} {% placeholder "content" %} {% placeholder to have a section on your website which should be the same on every single page, such as a footer block. You could hard-code your footer into the template, but it would be nicer to be able to manage it end of the HTML element: {% render_block "js" %} 4.1. Django/Python compatibility table 13 django cms Documentation, Release 3.6