[HIVE-4324] ORC Turn off dictionary encoding when number of distinct keys is greater than threshold - ASF JIRA

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Details

Type: Sub-task
Status: Closed
Priority: Major
Resolution: Fixed
Affects Version/s: 0.11.0
Fix Version/s: 0.12.0
Component/s: File Formats
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Description

Add a configurable threshold so that if the number of distinct values in a string column is greater than that fraction of non-null values, dictionary encoding is turned off.

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HIVE-4324.1.patch.txt
10/Apr/13 16:55
73 kB
Kevin Wilfong
HIVE-4324.D12045.1.patch
07/Aug/13 18:17
38 kB
Phabricator
HIVE-4324.D12045.2.patch
07/Aug/13 21:24
39 kB
Phabricator
HIVE-4324.D12045.2.patch
09/Aug/13 18:23
39 kB
Owen O'Malley
HIVE-4324.D12045.3.patch
10/Aug/13 22:10
39 kB
Phabricator

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Assignee:: Kevin Wilfong

Reporter:: Kevin Wilfong

Votes:: 0 Vote for this issue

Watchers:: 7 Start watching this issue

Dates

Created:: 10/Apr/13 02:27

Updated:: 09/Aug/14 19:34

Resolved:: 11/Aug/13 08:45