Paul Rogers created IMPALA-7766:
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Summary: Perform constant folding within an expression
Key: IMPALA-7766
URL: https://issues.apache.org/jira/browse/IMPALA-7766
Project: IMPALA
Issue Type:
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Paul Rogers updated IMPALA-7769:
Description:
Consider the following query:
{code:sql}
SELECT IFNULL(NULL + 1, id) FROM
Paul Rogers created IMPALA-7769:
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Summary: Constant folding sometimes introduces an unnecessary cast
Key: IMPALA-7769
URL: https://issues.apache.org/jira/browse/IMPALA-7769
Project: IMPALA
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Paul Rogers updated IMPALA-7769:
Description:
Consider the following query:
{code:sql}
SELECT IFNULL(NULL + 1, id) FROM
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Paul Rogers commented on IMPALA-7766:
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[~tarmstrong], makes sense, that seems how a parser would
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Paul Rogers updated IMPALA-7750:
Description:
The current FE {{CASE}} rewrite code in
Paul Rogers created IMPALA-7750:
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Summary: Additional FE optimizations for CASE expressions
Key: IMPALA-7750
URL: https://issues.apache.org/jira/browse/IMPALA-7750
Project: IMPALA
Issue Type:
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Paul Rogers updated IMPALA-7754:
Description:
The analyzer has a chain of rules which fire in order without (as noted above)
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Paul Rogers reassigned IMPALA-7754:
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Assignee: (was: Paul Rogers)
> Expressions sometimes not re-analyzed after rewrite
>
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Paul Rogers edited comment on IMPALA-7655 at 10/29/18 5:34 PM:
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Work on
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Paul Rogers edited comment on IMPALA-7655 at 10/29/18 5:35 PM:
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To
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Paul Rogers commented on IMPALA-7747:
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Other issues found in IMPALA-7655 and deferred:
h4. Special
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Paul Rogers reassigned IMPALA-7747:
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Assignee: (was: Paul Rogers)
Priority: Minor (was: Major)
Description:
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Paul Rogers reassigned IMPALA-7769:
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Assignee: (was: Paul Rogers)
> Handle CAST(NULL AS type) in rewrites
>
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Paul Rogers updated IMPALA-7769:
Description:
Consider the following query:
{code:sql}
SELECT IFNULL(NULL + 1, id) FROM
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Paul Rogers updated IMPALA-7769:
Summary: Handle CAST(NULL AS type) in rewrites (was: Constant folding
sometimes introduces an
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Paul Rogers updated IMPALA-7793:
Summary: CASE must not rewrite CAST(literal AS type) exprs (was: CASE
statement does not handle
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Paul Rogers updated IMPALA-7793:
Summary: Do not rewrite CAST(non-null-literal AS type) exprs (was: CASE
must not rewrite
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Paul Rogers commented on IMPALA-7793:
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This issue identified two problems.
First, V2 of Decimal
Paul Rogers created IMPALA-7805:
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Summary: NumericLiteral toSql() should render zero as 0, not
0-E38, 0.000, etc.
Key: IMPALA-7805
URL: https://issues.apache.org/jira/browse/IMPALA-7805
Project: IMPALA
Paul Rogers created IMPALA-7818:
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Summary: Standardize use of Expr predicates
Key: IMPALA-7818
URL: https://issues.apache.org/jira/browse/IMPALA-7818
Project: IMPALA
Issue Type: Improvement
Paul Rogers created IMPALA-7826:
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Summary: Potential NPE in CatalogOpExecutor
Key: IMPALA-7826
URL: https://issues.apache.org/jira/browse/IMPALA-7826
Project: IMPALA
Issue Type: Bug
Paul Rogers created IMPALA-7831:
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Summary: Revisit expression rewriting integration with planner
Key: IMPALA-7831
URL: https://issues.apache.org/jira/browse/IMPALA-7831
Project: IMPALA
Issue
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Paul Rogers updated IMPALA-7808:
Description:
The analysis steps in {{SelectStmt}} and {{AnalysisContext}} are large and
Paul Rogers created IMPALA-7808:
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Summary: Refactor Analyzer for easier debugging
Key: IMPALA-7808
URL: https://issues.apache.org/jira/browse/IMPALA-7808
Project: IMPALA
Issue Type:
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Paul Rogers updated IMPALA-7808:
Description:
The analysis steps in {{SelectStmt}} and {{AnalysisContext}} are large and
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Paul Rogers updated IMPALA-7805:
Description:
Testing of other issues revealed a somewhat bizarre aspect of how the planner
Paul Rogers created IMPALA-7807:
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Summary: Analysis test fixture to enable deeper testing
Key: IMPALA-7807
URL: https://issues.apache.org/jira/browse/IMPALA-7807
Project: IMPALA
Issue Type:
Paul Rogers created IMPALA-7821:
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Summary: Split up tests functions in ExprRewriteRulesTest for
easier debugging
Key: IMPALA-7821
URL: https://issues.apache.org/jira/browse/IMPALA-7821
Project: IMPALA
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Paul Rogers updated IMPALA-7750:
Description:
A trivial optimization is to omit ELSE if it adds no value:
{code:sql}
CASE WHEN id
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Paul Rogers commented on IMPALA-7754:
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There be dragons here. It seems that, without rewrites, we
Paul Rogers created IMPALA-7838:
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Summary: Planner's handling of parenthesized expressions is awkward
Key: IMPALA-7838
URL: https://issues.apache.org/jira/browse/IMPALA-7838
Project: IMPALA
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Paul Rogers commented on IMPALA-7754:
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Another misfire, in {{PlannerTest}},
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Paul Rogers updated IMPALA-7838:
Description:
Consider two simple queries:
{code:sql}
SELECT 2 + 3 * 4 FROM ...
SELECT (2 + 3) *
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Paul Rogers commented on IMPALA-7754:
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Another misfire, in {{PlannerTest}}, {{hdfs.test}}:
Paul Rogers created IMPALA-7841:
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Summary: Refactor QueryStmt, other analysis code for easier
debugging
Key: IMPALA-7841
URL: https://issues.apache.org/jira/browse/IMPALA-7841
Project: IMPALA
Paul Rogers created IMPALA-7842:
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Summary: Refactor FrontEnd to make plan fragments available for
testing
Key: IMPALA-7842
URL: https://issues.apache.org/jira/browse/IMPALA-7842
Project: IMPALA
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Work on IMPALA-7823 started by Paul Rogers.
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> Clean up Java warnings, fix minor issues
>
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Work on IMPALA-7842 started by Paul Rogers.
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> Refactor FrontEnd to make plan fragments available for testing
>
Paul Rogers created IMPALA-7855:
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Summary: Excessive type widening leads to unnecessary casts
Key: IMPALA-7855
URL: https://issues.apache.org/jira/browse/IMPALA-7855
Project: IMPALA
Issue
Paul Rogers created IMPALA-7823:
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Summary: Clean up Java warnings, fix minor issues
Key: IMPALA-7823
URL: https://issues.apache.org/jira/browse/IMPALA-7823
Project: IMPALA
Issue Type:
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Paul Rogers updated IMPALA-7821:
Summary: Split up test functions in ExprRewriteRulesTest for easier
debugging (was: Split up
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Paul Rogers commented on IMPALA-7769:
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An example failure in {{PlannerTest.testEmpt()}}, for the
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Paul Rogers edited comment on IMPALA-7754 at 11/8/18 1:54 AM:
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There be
Paul Rogers created IMPALA-7847:
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Summary: Standardize expression error message in analyzer to ease
testing
Key: IMPALA-7847
URL: https://issues.apache.org/jira/browse/IMPALA-7847
Project: IMPALA
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Paul Rogers updated IMPALA-7846:
Priority: Trivial (was: Minor)
Issue Type: Improvement (was: Bug)
> Analyzer expression
Paul Rogers created IMPALA-7844:
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Summary: Analysis code incorrectly attempts to support ordinals in
HAVING clause
Key: IMPALA-7844
URL: https://issues.apache.org/jira/browse/IMPALA-7844
Project:
Paul Rogers created IMPALA-7845:
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Summary: Clarify Impala's policy for use of column aliases
Key: IMPALA-7845
URL: https://issues.apache.org/jira/browse/IMPALA-7845
Project: IMPALA
Issue Type:
Paul Rogers created IMPALA-7846:
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Summary: Analyzer expression error checks done in wrong order
Key: IMPALA-7846
URL: https://issues.apache.org/jira/browse/IMPALA-7846
Project: IMPALA
Issue
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Paul Rogers edited comment on IMPALA-7564 at 10/2/18 6:59 PM:
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In an RDBMS,
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Paul Rogers commented on IMPALA-7564:
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In an RDBMS, the PK is hinted by a unique index. But, Hive
Paul Rogers created IMPALA-7692:
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Summary: Profile averages not computed for Exchange
InactiveTotalTime TIME_NS counter
Key: IMPALA-7692
URL: https://issues.apache.org/jira/browse/IMPALA-7692
Project:
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Paul Rogers commented on IMPALA-7564:
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The particular issue here appears to be the {{substr()}}
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Paul Rogers edited comment on IMPALA-7310 at 9/20/18 1:50 AM:
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Simplest
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Paul Rogers commented on IMPALA-7310:
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[~jeszyb], agree completely. Here I'm digging down to do a
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Paul Rogers commented on IMPALA-7310:
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Here, it is worth pointing out the risk of any change. The
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Paul Rogers commented on IMPALA-7310:
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As noted above, the code uses -1 as an "undefined"
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Paul Rogers commented on IMPALA-7310:
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The original description pointed out the method that computes
Paul Rogers created IMPALA-7602:
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Summary: Definition of NDV differs between planner and stats
mechanism
Key: IMPALA-7602
URL: https://issues.apache.org/jira/browse/IMPALA-7602
Project: IMPALA
Paul Rogers created IMPALA-7601:
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Summary: Define a-priori selectivity and NDV values
Key: IMPALA-7601
URL: https://issues.apache.org/jira/browse/IMPALA-7601
Project: IMPALA
Issue Type:
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Paul Rogers commented on IMPALA-7601:
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Please see [~tarmstr...@cloudera.com]'s comment in
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Paul Rogers edited comment on IMPALA-7310 at 9/20/18 9:08 PM:
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Per the
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Paul Rogers commented on IMPALA-7310:
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Per the suggestion of [~jeszyb], created IMPALA-7601 to
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Paul Rogers commented on IMPALA-7604:
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[~tarmstrong], in my experience, using planner memory
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Paul Rogers commented on IMPALA-7603:
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Turns out that a similar limitation exists for functions.
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Paul Rogers updated IMPALA-7603:
Description:
Consider the
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Paul Rogers edited comment on IMPALA-7310 at 9/21/18 12:04 AM:
---
The
Paul Rogers created IMPALA-7603:
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Summary: Incorrect NDV expression for col1 op col2
Key: IMPALA-7603
URL: https://issues.apache.org/jira/browse/IMPALA-7603
Project: IMPALA
Issue Type: Bug
Paul Rogers created IMPALA-7604:
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Summary: In AggregationNode.computeStats, handle cardinality
overflow better
Key: IMPALA-7604
URL: https://issues.apache.org/jira/browse/IMPALA-7604
Project: IMPALA
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Paul Rogers edited comment on IMPALA-7310 at 9/20/18 11:36 PM:
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The
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Paul Rogers edited comment on IMPALA-7310 at 9/20/18 3:02 AM:
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Odd. Looked
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Paul Rogers commented on IMPALA-7560:
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Created a unit test for this.
{noformat}
runTest("SELECT
Paul Rogers created IMPALA-7608:
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Summary: Estimate row count from file size when no stats available
Key: IMPALA-7608
URL: https://issues.apache.org/jira/browse/IMPALA-7608
Project: IMPALA
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Paul Rogers updated IMPALA-7601:
Description:
Impala makes extensive use of table stats during query planning. For example,
the
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Paul Rogers updated IMPALA-7608:
Description:
Impala makes heavy use of stats, which is a good thing. Stats feed into query
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Paul Rogers updated IMPALA-7603:
Summary: Incorrect NDV expression for col1 mathop col2 (was: Incorrect NDV
expression for col1
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Paul Rogers updated IMPALA-7601:
Summary: Improve default selectivity values (was: Define better default
selectivity values)
>
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Paul Rogers updated IMPALA-7601:
Summary: Define better default selectivity values (was: Define a-priori
selectivity and NDV
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Paul Rogers updated IMPALA-7601:
Description:
Impala makes extensive use of table stats during query planning. For example,
the
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Paul Rogers updated IMPALA-7601:
Description:
Impala makes extensive use of table stats during query planning. For example,
the
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Paul Rogers commented on IMPALA-7601:
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Based on the above reasoning, here is a recommended revised
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Paul Rogers updated IMPALA-7601:
Description:
Impala makes extensive use of table stats during query planning. For example,
the
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Paul Rogers updated IMPALA-7601:
Description:
Impala makes extensive use of table stats during query planning. For example,
the
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Paul Rogers edited comment on IMPALA-7564 at 9/25/18 12:24 AM:
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Great
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Paul Rogers commented on IMPALA-7564:
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Great description. I think we can tease apart some of the
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Paul Rogers commented on IMPALA-7604:
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Thanks, [~tarmstrong], for the very clear explanation.
bq. I
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Paul Rogers edited comment on IMPALA-7564 at 9/25/18 12:20 AM:
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Great
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Paul Rogers commented on IMPALA-7601:
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[~tarmstrong], thanks for the note. My thought is to make
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Paul Rogers edited comment on IMPALA-7310 at 9/26/18 7:44 PM:
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Final
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Paul Rogers edited comment on IMPALA-7310 at 9/26/18 7:45 PM:
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The planner
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Paul Rogers edited comment on IMPALA-7501 at 9/26/18 11:35 PM:
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A quick
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Paul Rogers commented on IMPALA-7501:
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Analysis:
* Impala's {{LocalCatalog}} contains a list of
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https://issues.apache.org/jira/browse/IMPALA-7501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16629410#comment-16629410
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Paul Rogers edited comment on IMPALA-7501 at 9/26/18 11:07 PM:
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Analysis:
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https://issues.apache.org/jira/browse/IMPALA-7501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16629410#comment-16629410
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Paul Rogers edited comment on IMPALA-7501 at 9/26/18 11:07 PM:
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Analysis:
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https://issues.apache.org/jira/browse/IMPALA-7501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16629410#comment-16629410
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Paul Rogers edited comment on IMPALA-7501 at 9/26/18 11:21 PM:
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Analysis:
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https://issues.apache.org/jira/browse/IMPALA-7501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16629410#comment-16629410
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Paul Rogers edited comment on IMPALA-7501 at 9/26/18 11:21 PM:
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Analysis:
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https://issues.apache.org/jira/browse/IMPALA-7501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16629621#comment-16629621
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Paul Rogers commented on IMPALA-7501:
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So the above was probably looking in the wrong haystack.
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Paul Rogers commented on IMPALA-7501:
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Analysis:
* Impala's {{LocalCatalog}} contains a list of
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https://issues.apache.org/jira/browse/IMPALA-7501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16629554#comment-16629554
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Paul Rogers edited comment on IMPALA-7501 at 9/27/18 12:09 AM:
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Analysis:
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https://issues.apache.org/jira/browse/IMPALA-7560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16620946#comment-16620946
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Paul Rogers commented on IMPALA-7560:
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The table in DRILL-5254 suggests how to use the NDV value to
301 - 400 of 800 matches
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