Retry request on 408/timeout response from server (#681)

[Deependra-Patel]

/gcbrun

[codecov]

Codecov Report

Merging #848 (5566395) into branch-2.2.x (cb6998b) will decrease coverage by 0.04%.
The diff coverage is 100.00%.

@@                Coverage Diff                 @@
##             branch-2.2.x     #848      +/-   ##
==================================================
- Coverage           80.30%   80.26%   -0.05%     
+ Complexity           2149     2144       -5     
==================================================
  Files                 150      150              
  Lines                9791     9793       +2     
  Branches             1129     1129              
==================================================
- Hits                 7863     7860       -3     
- Misses               1457     1458       +1     
- Partials              471      475       +4     

Flag	Coverage Δ
hadoop2integrationtest	60.05% <100.00%> (-0.24%)	⬇️
hadoop2unittest	68.55% <100.00%> (-0.02%)	⬇️
hadoop3integrationtest	?
hadoop3unittest	68.58% <100.00%> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...google/cloud/hadoop/util/RetryHttpInitializer.java	84.61% <100.00%> (+0.34%)	⬆️
...ogle/cloud/hadoop/gcsio/PrefixMappedItemCache.java	67.53% <0.00%> (-2.60%)	⬇️
...loud/hadoop/gcsio/cooplock/CoopLockRecordsDao.java	87.19% <0.00%> (-1.22%)	⬇️
...gle/cloud/hadoop/gcsio/GoogleCloudStorageImpl.java	87.56% <0.00%> (-0.10%)	⬇️

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