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24 Commits

Author SHA1 Message Date
Klaus Post 1c5b05c130 S3 select: Fix output conversion on select * (#8303) 
Fixes #8268
 2019-09-27 12:33:14 -07:00
Klaus Post 520552ffa9 S3 select: flush when reaching limit (#8279) 
Add missing flush when reaching select limit.
 2019-09-20 11:00:17 -07:00
Klaus Post dac1cf5a9a S3 Select: Parsing tweaks (#8261) 
* Don't output empty lines.
* Trim whitespace from byte to int/float/bool conversions.
 2019-09-17 17:21:23 -07:00
Klaus Post c9b8bd8de2 S3 Select: optimize output (#8238) 
Queue output items and reuse them.
Remove the unneeded type system in sql and just use the Go type system.

In best case this is more than an order of magnitude speedup:

```
BenchmarkSelectAll_1M-12    	       1	1841049400 ns/op	274299728 B/op	 4198522 allocs/op
BenchmarkSelectAll_1M-12    	      14	  84833400 ns/op	169228346 B/op	 3146541 allocs/op
```
 2019-09-17 05:56:27 +05:30
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
Yao Zongyou ec9bfd3aef speed up the performance of s3select on csv (#7945) 2019-08-31 00:07:40 -07:00
Yao Zongyou 941fed8e4a s3Select: call Close on error to release the read lock (#7830) 2019-06-25 13:30:48 -07:00
kannappanr 5ecac91a55
Replace Minio refs in docs with MinIO and links (#7494) 2019-04-09 11:39:42 -07:00
Aditya Manthramurthy e463386921 Add JSON Path expression evaluation support (#7315) 
- Includes support for FROM clause JSON path
 2019-03-09 08:13:37 -08:00
Harshavardhana df35d7db9d Introduce staticcheck for stricter builds (#7035) 2019-02-13 18:29:36 +05:30
Aditya Manthramurthy 4aa9ee153b Fix S3 Select request XML parsing (#7202) 2019-02-06 13:25:52 -08:00
Aditya Manthramurthy fd4e15c116 Flush the records staging buffer periodically (#7193) 
- Staging buffer is flushed every 500ms. In cases where the result
  records are slowly generated (e.g. when a where condition
  matches very few records), this change causes the server to send
  results even though the staging buffer is not full.

- Refactor messageWriter code to use simpler channel based
  co-ordination instead of atomic variables.
 2019-02-06 16:03:05 +05:30
Aditya Manthramurthy 91c839ad28 Use a buffer to collect SQL Select result rows (#7158) 
Batching records into a single SQL Select message in the response
leads to significant speed up as the message header overhead is made
negligible.

This change leads to a speed up of 3-5x for queries that select many
small records.
 2019-01-28 20:00:18 -08:00
Aditya Manthramurthy 2786055df4 Add new SQL parser to support S3 Select syntax (#7102) 
- New parser written from scratch, allows easier and complete parsing
  of the full S3 Select SQL syntax. Parser definition is directly
  provided by the AST defined for the SQL grammar.

- Bring support to parse and interpret SQL involving JSON path
  expressions; evaluation of JSON path expressions will be
  subsequently added.

- Bring automatic type inference and conversion for untyped
  values (e.g. CSV data).
 2019-01-28 17:59:48 -08:00
Bala FA b0deea27df Refactor s3select to support parquet. (#7023) 
Also handle pretty formatted JSON documents.
 2019-01-08 16:53:04 -08:00
Harshavardhana 4c7c571875 Support JSON to CSV and CSV to JSON output format conversion (#6910) 
This PR implements one of the pending items in issue #6286
in S3 API a user can request CSV output for a JSON document
and a JSON output for a CSV document. This PR refactors
the code a little bit to bring this feature.
 2018-12-07 14:55:32 -08:00
Harshavardhana 7e1661f4fa Performance improvements to SELECT API on certain query operations (#6752) 
This improves the performance of certain queries dramatically,
such as 'count(*)' etc.

Without this PR
```
~ time mc select --query "select count(*) from S3Object" myminio/sjm-airlines/star2000.csv.gz
2173762

real	0m42.464s
user	0m0.071s
sys	0m0.010s
```

With this PR
```
~ time mc select --query "select count(*) from S3Object" myminio/sjm-airlines/star2000.csv.gz
2173762

real	0m17.603s
user	0m0.093s
sys	0m0.008s
```

Almost a 250% improvement in performance. This PR avoids a lot of type
conversions and instead relies on raw sequences of data and interprets
them lazily.

```
benchcmp old new
benchmark                        old ns/op       new ns/op       delta
BenchmarkSQLAggregate_100K-4     551213          259782          -52.87%
BenchmarkSQLAggregate_1M-4       6981901985      2432413729      -65.16%
BenchmarkSQLAggregate_2M-4       13511978488     4536903552      -66.42%
BenchmarkSQLAggregate_10M-4      68427084908     23266283336     -66.00%

benchmark                        old allocs     new allocs     delta
BenchmarkSQLAggregate_100K-4     2366           485            -79.50%
BenchmarkSQLAggregate_1M-4       47455492       21462860       -54.77%
BenchmarkSQLAggregate_2M-4       95163637       43110771       -54.70%
BenchmarkSQLAggregate_10M-4      476959550      216906510      -54.52%

benchmark                        old bytes       new bytes      delta
BenchmarkSQLAggregate_100K-4     1233079         1086024        -11.93%
BenchmarkSQLAggregate_1M-4       2607984120      557038536      -78.64%
BenchmarkSQLAggregate_2M-4       5254103616      1128149168     -78.53%
BenchmarkSQLAggregate_10M-4      26443524872     5722715992     -78.36%
```
 2018-11-14 15:55:10 -08:00
Harshavardhana f162d7bd97 Performance improvements by re-using record buffer (#6622) 
Avoid unnecessary pointer reference allocations
when not needed, for example

- *SelectFuncs{}
- *Row{}
 2018-10-31 08:48:01 +05:30
Ashish Kumar Sinha c0b4bf0a3e SQL select query for CSV/JSON (#6648) 
select * , select column names have been implemented for CSV.
select * is implemented for JSON.
 2018-10-22 12:12:22 -07:00
Praveen raj Mani cef044178c Treat columns with spaces inbetween [s3Select] (#6597) 
replace the double/single quotes with backticks for the xwb1989/sqlparser
to recognise such queries.

Fixes #6589
 2018-10-17 11:01:26 -07:00
Aditya Manthramurthy e3eec89d24 Optimize string processing in select (#6593) 
Reduce allocations during string concatenation and simplify some
processing code.
 2018-10-09 14:02:19 -07:00
Aditya Manthramurthy 16a100b597 Fix out-of-bound array access crash in select processing (#6594) 
Fix test case.
 2018-10-09 09:45:56 -07:00
Raphael Randschau 8601f29d95 select: fix int overflow of math.MaxInt64 on ARM (#6317) 2018-08-22 16:16:04 +05:30
Arjun Mishra 7c14cdb60e S3 Select API Support for CSV (#6127) 
Add support for trivial where clause cases
 2018-08-15 03:30:19 -07:00