[fix][broker] Fix BufferOverflowException and EOFException bugs in /metrics gzip compression #22576
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Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## master #22576 +/- ##
============================================
+ Coverage 73.57% 73.95% +0.37%
+ Complexity 32624 32595 -29
============================================
Files 1877 1885 +8
Lines 139502 140520 +1018
Branches 15299 15452 +153
============================================
+ Hits 102638 103919 +1281
+ Misses 28908 28565 -343
- Partials 7956 8036 +80
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…etrics gzip compression (apache#22576) (cherry picked from commit 997c8b9) (cherry picked from commit fe05e08)
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…etrics gzip compression (apache#22576) (cherry picked from commit 997c8b9) (cherry picked from commit fe05e08)
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…etrics gzip compression (apache#22576)
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Fixes #22575
Motivation
See #22575 . This is a bug introduced by #22521. While fixing the bug, another related bug was revealed where it resulted in a EOFException when reading the gzipped content.
While working on this PR, another unrelated issue in the metrics output buffer pre-allocation was detected. It is also fixed in this PR. The impact of this is about 2x direct memory allocation since the pre-allocated buffers weren't used at all.
Modifications
capacitymethod to pre-allocate the buffer..setIndex(0, chunkSize)should have been called for the chunk before adding it. This is how thecapacitymethod increases the capacity.Documentation
docdoc-requireddoc-not-neededdoc-complete