Klaus Post
26e760ee62
Fix JSON Close data race. ( #8486 )
...
The JSON stream library has no safe way of aborting while
Since we cannot expect the called to safely handle "Read" and "Close" calls we must handle this.
Also any Read error returned from upstream will crash the server. We preserve the errors and instead always return io.EOF upstream, but send the error on Close.
`readahead v1.3.1` handles Read after Close better.
Updates to `progressReader` is mostly to ensure safety.
Fixes #8481
2019-11-05 14:20:37 -08:00
Klaus Post
ddea0bdf11
Concurrent CSV parsing and reduce S3 select allocations ( #8200 )
...
```
CSV parsing, BEFORE:
BenchmarkReaderBasic-12 2842 407533 ns/op 397860 B/op 957 allocs/op
BenchmarkReaderReplace-12 2718 429914 ns/op 397844 B/op 957 allocs/op
BenchmarkReaderReplaceTwo-12 2718 435556 ns/op 397855 B/op 957 allocs/op
BenchmarkAggregateCount_100K-12 171 6798974 ns/op 16667102 B/op 308077 allocs/op
BenchmarkAggregateCount_1M-12 19 65657411 ns/op 168057743 B/op 3146610 allocs/op
BenchmarkSelectAll_10M-12 1 20882119900 ns/op 2758799896 B/op 41978762 allocs/op
CSV parsing, AFTER:
BenchmarkReaderBasic-12 3721 312549 ns/op 101920 B/op 338 allocs/op
BenchmarkReaderReplace-12 3776 318810 ns/op 101993 B/op 340 allocs/op
BenchmarkReaderReplaceTwo-12 3610 330967 ns/op 102012 B/op 341 allocs/op
BenchmarkAggregateCount_100K-12 295 4149588 ns/op 3553623 B/op 103261 allocs/op
BenchmarkAggregateCount_1M-12 30 37746503 ns/op 33827931 B/op 1049435 allocs/op
BenchmarkSelectAll_10M-12 1 17608495800 ns/op 1416504040 B/op 21007082 allocs/op
~ benchcmp old.txt new.txt
benchmark old ns/op new ns/op delta
BenchmarkReaderBasic-12 407533 312549 -23.31%
BenchmarkReaderReplace-12 429914 318810 -25.84%
BenchmarkReaderReplaceTwo-12 435556 330967 -24.01%
BenchmarkAggregateCount_100K-12 6798974 4149588 -38.97%
BenchmarkAggregateCount_1M-12 65657411 37746503 -42.51%
BenchmarkSelectAll_10M-12 20882119900 17608495800 -15.68%
benchmark old allocs new allocs delta
BenchmarkReaderBasic-12 957 338 -64.68%
BenchmarkReaderReplace-12 957 340 -64.47%
BenchmarkReaderReplaceTwo-12 957 341 -64.37%
BenchmarkAggregateCount_100K-12 308077 103261 -66.48%
BenchmarkAggregateCount_1M-12 3146610 1049435 -66.65%
BenchmarkSelectAll_10M-12 41978762 21007082 -49.96%
benchmark old bytes new bytes delta
BenchmarkReaderBasic-12 397860 101920 -74.38%
BenchmarkReaderReplace-12 397844 101993 -74.36%
BenchmarkReaderReplaceTwo-12 397855 102012 -74.36%
BenchmarkAggregateCount_100K-12 16667102 3553623 -78.68%
BenchmarkAggregateCount_1M-12 168057743 33827931 -79.87%
BenchmarkSelectAll_10M-12 2758799896 1416504040 -48.66%
```
```
BenchmarkReaderHuge/97K-12 2200 540840 ns/op 184.32 MB/s 1604450 B/op 687 allocs/op
BenchmarkReaderHuge/194K-12 1522 752257 ns/op 265.04 MB/s 2143135 B/op 1335 allocs/op
BenchmarkReaderHuge/389K-12 1190 947858 ns/op 420.69 MB/s 3221831 B/op 2630 allocs/op
BenchmarkReaderHuge/778K-12 806 1472486 ns/op 541.61 MB/s 5201856 B/op 5187 allocs/op
BenchmarkReaderHuge/1557K-12 426 2575269 ns/op 619.36 MB/s 9101330 B/op 10233 allocs/op
BenchmarkReaderHuge/3115K-12 286 4034656 ns/op 790.66 MB/s 12397968 B/op 16099 allocs/op
BenchmarkReaderHuge/6230K-12 172 6830563 ns/op 934.05 MB/s 16008416 B/op 26844 allocs/op
BenchmarkReaderHuge/12461K-12 100 11409467 ns/op 1118.39 MB/s 22655163 B/op 48107 allocs/op
BenchmarkReaderHuge/24922K-12 66 19780395 ns/op 1290.19 MB/s 35158559 B/op 90216 allocs/op
BenchmarkReaderHuge/49844K-12 34 37282559 ns/op 1369.03 MB/s 60528624 B/op 174497 allocs/op
```
2019-09-13 14:18:35 -07:00
kannappanr
5ecac91a55
Replace Minio refs in docs with MinIO and links ( #7494 )
2019-04-09 11:39:42 -07:00
Harshavardhana
85e939636f
Fix JSON parser handling for certain objects ( #7162 )
...
This PR also adds some comments and simplifies
the code. Primary handling is done to ensure
that we make sure to honor cached buffer.
Added unit tests as well
Fixes #7141
2019-02-07 08:04:42 +05:30
