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https://issues.apache.org/jira/browse/HIVE-23095?focusedWorklogId=418717&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-418717
 ]

ASF GitHub Bot logged work on HIVE-23095:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 08/Apr/20 17:03
            Start Date: 08/Apr/20 17:03
    Worklog Time Spent: 10m 
      Work Description: prasanthj commented on pull request #964: HIVE-23095 
ndv 70
URL: https://github.com/apache/hive/pull/964#discussion_r405677422
 
 

 ##########
 File path: 
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/common/ndv/hll/HLLSparseRegister.java
 ##########
 @@ -148,8 +148,12 @@ public int encodeHash(long hashcode) {
     }
   }
 
-  public int getSize() {
-    return sparseMap.size() + tempListIdx;
+  public boolean isSizeGreaterThan(int s) {
+    if (sparseMap.size() + tempListIdx > s) {
+      mergeTempListToSparseMap();
 
 Review comment:
   ah ok.. i did the math with p=14 and forgot that we switched to 10 in hive. 
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 418717)
    Time Spent: 1h 10m  (was: 1h)

> NDV might be overestimated for a table with ~70 value
> -----------------------------------------------------
>
>                 Key: HIVE-23095
>                 URL: https://issues.apache.org/jira/browse/HIVE-23095
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: HIVE-23095.01.patch, HIVE-23095.02.patch, 
> HIVE-23095.03.patch, HIVE-23095.04.patch, HIVE-23095.04.patch, 
> HIVE-23095.04.patch, HIVE-23095.05.patch, hll-bench.md
>
>          Time Spent: 1h 10m
>  Remaining Estimate: 0h
>
> uncovered during looking into HIVE-23082
> https://issues.apache.org/jira/browse/HIVE-23082?focusedCommentId=17067773&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-17067773



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