# 2021: The Year in Review

**URL:** <https://discuss.elastic.co/t/2021-the-year-in-review/293492>\
**Category:** Meta Elastic\
**Created:** [January 5, 2022, 4:09am UTC](https://discuss.elastic.co/t/2021-the-year-in-review/293492 "2022-01-05T04:09:15Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [January 5, 2022, 4:09am UTC](https://discuss.elastic.co/t/2021-the-year-in-review/293492/2 "2022-01-05T04:09:17Z")

</div>

## [Top #Elasticsearch Topics](https://discuss.elastic.co/c/elastic-stack/elasticsearch/l/top)

### Most Read

| User | Topic | Hours Read |
| --- | --- | --- |
| ![](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spotlight2001/50/54078_2.png) | [Zero-day-exploit in log4j2 which is part of elasticsearch](https://discuss.elastic.co/t/zero-day-exploit-in-log4j2-which-is-part-of-elasticsearch/291439) | 78 |
| ![](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alex_batt/50/92853_2.png) | [How to disable geoip usage in 7.14.0](https://discuss.elastic.co/t/how-to-disable-geoip-usage-in-7-14-0/281076) | 9 |
| ![](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ppuschmann/50/599_2.png) | [Elasticsearch 7.16.1 crashing randomly](https://discuss.elastic.co/t/elasticsearch-7-16-1-crashing-randomly/291827) | 8 |
| ![](https://avatars.discourse-cdn.com/v4/letter/e/3e96dc/50.png) | [Elasticsearch installation](https://discuss.elastic.co/t/elasticsearch-installation/285415) | 8 |
| ![](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/marcosvrrs/50/77073_2.png) | [Slow Cluster in Elastic Cloud since updating to 7.12](https://discuss.elastic.co/t/slow-cluster-in-elastic-cloud-since-updating-to-7-12/268844) | 7 |

### Most Replies

| User | Topic | Replies |
| --- | --- | --- |
| ![](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spotlight2001/50/54078_2.png) | [Zero-day-exploit in log4j2 which is part of elasticsearch](https://discuss.elastic.co/t/zero-day-exploit-in-log4j2-which-is-part-of-elasticsearch/291439) | 93 |
| ![](https://avatars.discourse-cdn.com/v4/letter/s/cdc98d/50.png) | [Elasticsearch query time range issue](https://discuss.elastic.co/t/elasticsearch-query-time-range-issue/268672) | 50 |
| ![](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/juan_david_jaramillo/50/76831_2.png) | [Watcher that counts the documents that arrive to an index in kibana](https://discuss.elastic.co/t/watcher-that-counts-the-documents-that-arrive-to-an-index-in-kibana/270609) | 45 |
| ![](https://avatars.discourse-cdn.com/v4/letter/e/3e96dc/50.png) | [Elasticsearch installation](https://discuss.elastic.co/t/elasticsearch-installation/285415) | 45 |
| ![](https://avatars.discourse-cdn.com/v4/letter/r/d6d6ee/50.png) | [How to figure what what is using so much CPU and memory in Elastic Search?](https://discuss.elastic.co/t/how-to-figure-what-what-is-using-so-much-cpu-and-memory-in-elastic-search/282202) | 41 |

### Most Popular

| User | Topic | Score |
| --- | --- | --- |
| ![](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spotlight2001/50/54078_2.png) | [Zero-day-exploit in log4j2 which is part of elasticsearch](https://discuss.elastic.co/t/zero-day-exploit-in-log4j2-which-is-part-of-elasticsearch/291439) | 22 |
| ![](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alex_batt/50/92853_2.png) | [How to disable geoip usage in 7.14.0](https://discuss.elastic.co/t/how-to-disable-geoip-usage-in-7-14-0/281076) | 19 |
| ![](https://avatars.discourse-cdn.com/v4/letter/l/7993a0/50.png) | [3 nodes in the cluster, 2 data and 1 master - why if one fails it takes the whole cluster down?](https://discuss.elastic.co/t/3-nodes-in-the-cluster-2-data-and-1-master-why-if-one-fails-it-takes-the-whole-cluster-down/267165) | 18 |
| ![](https://avatars.discourse-cdn.com/v4/letter/d/77aa72/50.png) | [Kibana unable to authenticate](https://discuss.elastic.co/t/kibana-unable-to-authenticate/260830) | 18 |
| ![](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/aurel_drejta/50/59925_2.png) | [Higher CPU vs Higher Memory. Which helps in what cases?](https://discuss.elastic.co/t/higher-cpu-vs-higher-memory-which-helps-in-what-cases/272798) | 17 |

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_[View the full topic](https://discuss.elastic.co/t/2021-the-year-in-review/293492)._