Interesting Stuff - Week 29

Throughout the week, I read a lot of blog-posts, articles, etc., that has to do with things that interest me

• data science
• data in general
• distributed computing
• SQL Server
• transactions (both db as well as non db)
• and other "stuff"

This is the "roundup" of the posts that has been most interesting to me, for the week just gone by.

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SQL Server 2017 SQLCLR - Whitelisting Assemblies

A little while ago I wrote a blog-post about the changes in the SQLCLR security model in SQL Server 2017. I wrote about how Microsoft has changed the relation between CAS and security boundaries, and CAS is no longer supported as a boundary! And also how Microsoft introduced an sp_configure option called clr strict security, which by default is set to 1 (on). When the setting is on, SQL Server treats all assemblies (SAFE, EXTERNAL_ACCESS, UNSAFE) as if they were marked UNSAFE.

The release I wrote the post against was CTP 2.1, and earlier this week Microsoft released SQL Server 2017 RC1. Some days ago I received a comment from Paul Vestuto on my post, pointing out that in RC1 there has been some more changes to the security model. I thought those changes would earn their own blog-post, instead of just editing the previous post.

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Microsoft SQL Server R Services - Internals VIII

This post is part of a series of blog-posts about Microsoft SQL Server R Services:

1. Microsoft SQL Server 2016 R Services Installation
2. Microsoft SQL Server R Services - Internals I
3. Microsoft SQL Server R Services - Internals II
4. Microsoft SQL Server R Services - Internals III
5. Microsoft SQL Server R Services - Internals IV
6. Microsoft SQL Server R Services - Internals V
7. Microsoft SQL Server R Services - Internals VI
8. Microsoft SQL Server R Services - Internals VII
9. Microsoft SQL Server R Services - Internals VIII (this post)
10. More to come (hopefully)

This post is the ninth post about Microsoft SQL Server R Services, and the eight post that drills down into the internal of how it works.

So far in this series we have been looking at what happens in SQL Server as well as the launchpad service when we execute sp_execute_external_script, and we have still no real "clue" to where the R engine comes into play.

Well, hopefully that will change (at least a little bit) with this post, as we here will look at what happens when we leave the launchpad service.

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Interesting Stuff - Week 28

Throughout the week, I read a lot of blog-posts, articles, etc., that has to do with things that interest me

• data science
• data in general
• distributed computing
• SQL Server
• transactions (both db as well as non db)
• and other "stuff"

This is the "roundup" of the posts that has been most interesting to me, for the week just gone by.

Read More ...

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Microsoft SQL Server R Services - Internals VII

(WOW, I finally managed to get this post out! Yay to me!!)

This post is part of a series of blog-posts about Microsoft SQL Server R Services:

1. Microsoft SQL Server 2016 R Services Installation
2. Microsoft SQL Server R Services - Internals I
3. Microsoft SQL Server R Services - Internals II
4. Microsoft SQL Server R Services - Internals III
5. Microsoft SQL Server R Services - Internals IV
6. Microsoft SQL Server R Services - Internals V
7. Microsoft SQL Server R Services - Internals VI
8. Microsoft SQL Server R Services - Internals VII (this post)
9. Microsoft SQL Server R Services - Internals VIII
10. More to come (hopefully)

This post is the eighth post about Microsoft SQL Server R Services, and the seventh post that drills down into the internal of how it works. In this post we will look more at some of the directories that are created when we execute sp_execute_external_script, as well as files being created in those directories.

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