Adam Tamas 99e5f5a885 IMPALA-10133:Implement ds_hll_stringify function. ...

This function receives a string that is a serialized Apache DataSketches
HLL sketch and returns its stringified format.

A stringified format should look like and contains the following data:

select ds_hll_stringify(ds_hll_sketch(float_col)) from
functional_parquet.alltypestiny;
+--------------------------------------------+
| ds_hll_stringify(ds_hll_sketch(float_col)) |
+--------------------------------------------+
| ### HLL sketch summary:                    |
|   Log Config K   : 12                      |
|   Hll Target     : HLL_4                   |
|   Current Mode   : LIST                    |
|   LB             : 2                       |
|   Estimate       : 2                       |
|   UB             : 2.0001                  |
|   OutOfOrder flag: false                   |
|   Coupon count   : 2                       |
| ### End HLL sketch summary                 |
|                                            |
+--------------------------------------------+

Change-Id: I85dbf20b5114dd75c300eef0accabe90eac240a0
Reviewed-on: http://gerrit.cloudera.org:8080/16382
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>

2020-09-03 12:11:48 +00:00

..

.gitignore

- Move thrift out of FE src and into impala/common

2011-12-30 19:35:20 -08:00

CMakeLists.txt

IMPALA-3786: Replace "cloudera" with "apache" (part 2)

2016-09-29 21:14:13 +00:00

gen_builtins_catalog.py

IMPALA-3786: Replace "cloudera" with "apache" (part 2)

2016-09-29 21:14:13 +00:00

impala_functions.py

IMPALA-10133:Implement ds_hll_stringify function.

2020-09-03 12:11:48 +00:00