[ISSUE #12207] fix disk failover datasource not keep status

[shalk]

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What is the purpose of the change

fix #12207

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 72.72727% with 3 lines in your changes missing coverage. Please review.

Project coverage is 68.80%. Comparing base (04f9b86) to head (ad3a727).
Report is 16 commits behind head on develop.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop   #12188      +/-   ##
=============================================
+ Coverage      68.74%   68.80%   +0.06%     
- Complexity      9140     9229      +89     
=============================================
  Files           1254     1264      +10     
  Lines          40952    41188     +236     
  Branches        4344     4361      +17     
=============================================
+ Hits           28151    28338     +187     
- Misses         10787    10813      +26     
- Partials        2014     2037      +23     

Files	Coverage Δ
...ing/backups/datasource/DiskFailoverDataSource.java	78.68% <72.72%> (-3.46%)	⬇️

... and 24 files with indirect coverage changes

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[KomachiSion]

has switchParams keep the status?

[KomachiSion]

Suggest submit issue first to describe this problem.

[shalk]

has switchParams keep the status?

No, it is not.

When lastmodify is not changed, but if (lastModifiedMillis < modified) make FailoverFileReader return false

[KomachiSion]

has switchParams keep the status?

No, it is not.

When lastmodify is not changed, but if (lastModifiedMillis < modified) make FailoverFileReader return false

If lastmodify is not changed, the FailoverFileReader should be false, which means there is no need to reload file i think.