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https://issues.apache.org/jira/browse/HIVE-22940?focusedWorklogId=402471&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-402471
]
ASF GitHub Bot logged work on HIVE-22940:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 12/Mar/20 20:38
Start Date: 12/Mar/20 20:38
Worklog Time Spent: 10m
Work Description: jcamachor commented on pull request #930: HIVE-22940
datasketches functions
URL: https://github.com/apache/hive/pull/930#discussion_r391881328
##########
File path:
ql/src/java/org/apache/hadoop/hive/ql/exec/DataSketchesFunctions.java
##########
@@ -0,0 +1,218 @@
+package org.apache.hadoop.hive.ql.exec;
+
+import org.apache.hadoop.hive.ql.udf.generic.GenericUDAFResolver2;
+import org.apache.hadoop.hive.ql.udf.generic.GenericUDTF;
+
+public class DataSketchesFunctions {
+
+ private static final String DATA_TO_SKETCH = "datatosketch";
+ private static final String SKETCH_TO_ESTIMATE_WITH_ERROR_BOUNDS =
"sketchToEstimateWithErrorBounds";
+ // FIXME: consider to rename it to simply "estimate" or "evaluate" - in case
of the counting sketches the "sketchto..." doesnt add value
+ private static final String SKETCH_TO_ESTIMATE = "sketchToEstimate";
+ private static final String SKETCH_TO_STRING = "sketchToString";
+ // FIXME: probably use simply "union" instead unionSketch?
+ private static final String UNION_SKETCH = "unionSketch";
+ private static final String GET_N = "getN";
+ private static final String GET_CDF = "getCdf";
+ private static final String GET_PMF = "getPmf";
+ private static final String GET_QUANTILES = "GetQuantiles";
+ private static final String GET_QUANTILE = "GetQuantile";
+ private static final String GET_RANK = "getRank";
+ private static final String INTERSECT_SKETCH = "intersection";
+ private static final String EXCLUDE_SKETCH = "exclude";
+ private static final String GET_K = "getK";
+ private static final String GET_FREQUENT_ITEMS = "getFrequentItems";
+ private static final String T_TEST = "TTest";
+ private static final String SKETCH_TO_MEANS = "sketchtomeans";
+ private static final String SKETCH_TO_NUMBER_OF_RETAINED_ENTRIES =
"sketchtonumberofretainedentries";
+ private static final String SKETCH_TO_QUANTILES_SKETCH =
"sketchToQuantilesSketch";
+ private static final String SKETCH_TO_VALUES = "sketchToValues";
+ private static final String SKETCH_TO_VARIANCES = "sketchToVariances";
+ private static final String SKETCH_TO_PERCENTILE = "sketchToPercentile";
+ private static final String UNION_SKETCH1 = "unionSketch1";
+ private static final String INTERSECT_SKETCH1 = "intersect";
+
+ private final Registry system;
+
+ public DataSketchesFunctions(Registry system) {
+ this.system = system;
+ }
+
+ public static void register(Registry system) {
+ DataSketchesFunctions dsf = new DataSketchesFunctions(system);
+ // FIXME: what this should be approx, ds ... other?
+ String prefix = "ds";
Review comment:
I like `ds`
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Issue Time Tracking
-------------------
Worklog Id: (was: 402471)
Time Spent: 2.5h (was: 2h 20m)
> Make the datasketches functions available as predefined functions
> ------------------------------------------------------------------
>
> Key: HIVE-22940
> URL: https://issues.apache.org/jira/browse/HIVE-22940
> Project: Hive
> Issue Type: Sub-task
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-22940.01.patch, HIVE-22940.02.patch
>
> Time Spent: 2.5h
> Remaining Estimate: 0h
>
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