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add test for skip_values in DictionaryDecoder and fix it #2105

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merged 1 commit into from Jul 20, 2022

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Ted-Jiang
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Which issue does this PR close?

Related #2079

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What changes are included in this PR?

Are there any user-facing changes?

@github-actions github-actions bot added the parquet Changes to the parquet crate label Jul 19, 2022
@@ -346,6 +346,7 @@ where
// Keys will be validated on conversion to arrow
let keys_slice = keys.spare_capacity_mut(range.start + len);
let len = decoder.get_batch(&mut keys_slice[range.start..])?;
*max_remaining_values -= len;
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miss this will fail at record skip count.

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Codecov Report

Merging #2105 (0c7cfb5) into master (2541e2c) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2105      +/-   ##
==========================================
+ Coverage   83.73%   83.74%   +0.01%     
==========================================
  Files         225      225              
  Lines       59412    59458      +46     
==========================================
+ Hits        49748    49796      +48     
+ Misses       9664     9662       -2     
Impacted Files Coverage Δ
...et/src/arrow/array_reader/byte_array_dictionary.rs 86.97% <100.00%> (+2.51%) ⬆️
arrow/src/datatypes/datatype.rs 64.05% <0.00%> (-0.36%) ⬇️
parquet/src/encodings/rle.rs 92.78% <0.00%> (+0.19%) ⬆️
parquet_derive/src/parquet_field.rs 65.98% <0.00%> (+0.45%) ⬆️

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let valid = vec![true, true, true, true, true];
let valid_buffer = Buffer::from_iter(valid.iter().cloned());
output.pad_nulls(0, 5, 5, valid_buffer.as_slice());
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@tustvold i found without pad_nulls then call into_array will return empty.
Is there other way to change into array without padding🤔

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Yes, call BufferQueue::set_len, which is what RecordReader will do

@tustvold tustvold merged commit 3096591 into apache:master Jul 20, 2022
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ursabot commented Jul 20, 2022

Benchmark runs are scheduled for baseline = 8d7e2ae and contender = 3096591. 3096591 is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ec2-t3-xlarge-us-east-2] ec2-t3-xlarge-us-east-2
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on test-mac-arm] test-mac-arm
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ursa-i9-9960x] ursa-i9-9960x
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ursa-thinkcentre-m75q] ursa-thinkcentre-m75q
Buildkite builds:
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java

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4 participants