Adam Tamas created IMPALA-10133:
-----------------------------------
Summary: Implement ds_hll_stringify()
Key: IMPALA-10133
URL: https://issues.apache.org/jira/browse/IMPALA-10133
Project: IMPALA
Issue Type: Sub-task
Reporter: Adam Tamas
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(i)) from t;)
+----------------------------------------------------+
| _c0 |
+----------------------------------------------------+
| ### HLL SKETCH SUMMARY:
Log Config K : 12
Hll Target : HLL_4
Current Mode : LIST
Memory : true
LB : 1.0
Estimate : 1.0
UB : 1.000049929250618
OutOfOrder Flag: false
Coupon Count : 1
|
+----------------------------------------------------+
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