[Backport 2.x] Add safeguards limits for file cache

[kotwanikunal]

Description

• Backports Add safeguard limits for file cache during node level allocation #8208, Add restore level safeguards to prevent file cache oversubscription #8606 to 2.x

Related Issues

Resolves #7713 on 2.x

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/21355/
• CommitID: e0c5bf3

[codecov]

Codecov Report

Merging #8989 (e0c5bf3) into 2.x (d83386c) will decrease coverage by 0.03%.
The diff coverage is 87.65%.

@@             Coverage Diff              @@
##                2.x    #8989      +/-   ##
============================================
- Coverage     70.75%   70.73%   -0.03%     
+ Complexity    57361    57336      -25     
============================================
  Files          4747     4747              
  Lines        271124   271199      +75     
  Branches      39991    40003      +12     
============================================
- Hits         191826   191822       -4     
- Misses        62852    62956     +104     
+ Partials      16446    16421      -25     

Files Changed	Coverage Δ
...ster/snapshots/restore/RestoreSnapshotRequest.java	64.20% <ø> (-1.17%)	⬇️
...rg/opensearch/common/settings/ClusterSettings.java	93.18% <ø> (ø)
.../main/java/org/opensearch/cluster/ClusterInfo.java	58.45% <62.50%> (-0.07%)	⬇️
.../java/org/opensearch/snapshots/RestoreService.java	56.80% <82.50%> (+2.47%)	⬆️
...opensearch/cluster/InternalClusterInfoService.java	74.67% <100.00%> (-0.99%)	⬇️
...a/org/opensearch/cluster/routing/RoutingTable.java	94.82% <100.00%> (+0.44%)	⬆️
...uting/allocation/decider/DiskThresholdDecider.java	73.98% <100.00%> (+1.35%)	⬆️
...search/index/store/remote/filecache/FileCache.java	72.46% <100.00%> (+0.40%)	⬆️
server/src/main/java/org/opensearch/node/Node.java	86.06% <100.00%> (ø)

... and 421 files with indirect coverage changes

[kotwanikunal]

@reta Can you please have a look at this backport PR?

[reta]

@reta Can you please have a look at this backport PR?

@kotwanikunal Sorry about it, just saw the comment, thanks @mch2 !

[Dileep-Dora]

HI @kotwanikunal when is the release planned for this?

[kotwanikunal]

@Dileep-Dora This will be released as a part of v2.10. You can follow the release here: opensearch-project/opensearch-build#3743

[Dileep-Dora]

@kotwanikunal Thanks for the reply any tentative date on the release?

[kotwanikunal]

@kotwanikunal Thanks for the reply any tentative date on the release?

It is on 9/25 (the upcoming Monday).