Tag - ClickHouse

MariaDB Track at Percona Live

MariaDB track at Percona Live 2019

Less than one month left until Percona Live. This time the Committee work was a bit unusual. Instead of having one big committee for the whole conference we had a few mini-committees, each responsible for a track. Each independent mini-committee, in turn, had a leader who was responsible for the whole process. I led […]

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Analyze Your Raw MySQL Query Logs with ClickHouse

In this blog post, I’ll look at how you can analyze raw MySQL query logs with ClickHouse.
For typical query performance analyses, we have an excellent tool in Percona Monitoring and Management. You may want to go deeper, though. You might be longing for the ability to query raw MySQL “slow” query logs with SQL.
There […]

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Archiving MySQL Tables in ClickHouse

Archiving MySQL Tables in ClickHouse

In this blog post, I will talk about archiving MySQL tables in ClickHouse for storage and analytics.
Why Archive?
Hard drives are cheap nowadays, but storing lots of data in MySQL is not practical and can cause all sorts of performance bottlenecks. To name just a few issues:

The larger the table and index, the slower the performance […]

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Updating/Deleting Rows From Clickhouse (Part 2)

ClickHouse

In this post, we’ll look at updating and deleting rows with ClickHouse. It’s the second of two parts.
In the first part of this post, we described the high-level overview of implementing incremental refresh on a ClickHouse table as an alternative support for UPDATE/DELETE. In this part, we will show you the actual steps and […]

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