HBASE-28712 Add JDK17 in the support matrix in our ref guide

[Apache9]

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[Apache-HBase]

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GITHUB PR	#6051
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+0 🆗	refguide	2m 29s		branch has no errors when building the reference guide. See footer for rendered docs, which you should manually inspect.
+1 💚	spotless	0m 45s		branch has no errors when running spotless:check.
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refguide	https://nightlies.apache.org/hbase/HBase-PreCommit-GitHub-PR/PR-6051/1/yetus-general-check/output/branch-site/book.html
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GITHUB PR	#6051
Optional Tests
uname	Linux 40653c8660d4 5.4.0-182-generic #202-Ubuntu SMP Fri Apr 26 12:29:36 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
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[Apache-HBase]

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+0 🆗	refguide	2m 31s		branch has no errors when building the reference guide. See footer for rendered docs, which you should manually inspect.
+1 💚	spotless	0m 45s		branch has no errors when running spotless:check.
			_ Patch Compile Tests _
+1 💚	mvninstall	2m 52s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+0 🆗	refguide	2m 14s		patch has no errors when building the reference guide. See footer for rendered docs, which you should manually inspect.
+1 💚	spotless	0m 44s		patch has no errors when running spotless:check.
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Docker	ClientAPI=1.46 ServerAPI=1.46 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-6051/2/artifact/yetus-general-check/output/Dockerfile
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Optional Tests	dupname asflicense codespell detsecrets refguide spotless
uname	Linux 2dfcbfe7f511 5.4.0-182-generic #202-Ubuntu SMP Fri Apr 26 12:29:36 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
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[Apache9]

@bbeaudreault PTAL.

Thanks.

[bbeaudreault]

If this renders appropriately then lgtm

[bbeaudreault]

Were these leading 2+ here and below intentional? I'm not super familiar with the syntax

[Apache9]

+2 means merge the two columns.

[bbeaudreault]

I found the rendered output and it looks good. I wonder if we should mark 2.5 as green though. We've been running it in prod for quite a while. The only issue we saw was HBASE-28206, which is fixed in the latest 2.5 release

[Apache9]

I found the rendered output and it looks good. I wonder if we should mark 2.5 as green though. We've been running it in prod for quite a while. The only issue we saw was HBASE-28206, which is fixed in the latest 2.5 release

@apurtell What do you think? Thanks.

[bbeaudreault]

We ran jdk17 in prod with a base version of 2.5.2 (with lots of backports, almost 2.6) for about a year. We've now been running jdk21 in prod for almost 9 months without any new issue. We've also been using the generational g1gc in java21 for some clusters. I wonder if it makes sense to at least mark java21 as preliminary support.

[Apache9]

We ran jdk17 in prod with a base version of 2.5.2 (with lots of backports, almost 2.6) for about a year. We've now been running jdk21 in prod for almost 9 months without any new issue. We've also been using the generational g1gc in java21 for some clusters. I wonder if it makes sense to at least mark java21 as preliminary support.

For me I think at least we should have a pre commit and nightly task for that JDK version before we claim that we have support it...