Zhenhua Wang created SPARK-21127:
Summary: Update statistics after data changing commands
Key: SPARK-21127
URL: https://issues.apache.org/jira/browse/SPARK-21127
Project: Spark
Issue Type: Su
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Zhenhua Wang commented on SPARK-17129:
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Sure, that'll be great~
> Support statistic
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Zhenhua Wang updated SPARK-17129:
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Comment: was deleted
(was: Sure, that'll be great~)
> Support statistics collection and cardinal
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Zhenhua Wang commented on SPARK-17129:
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[~mbasmanova] Sure, that'll be great~
> Sup
Zhenhua Wang created SPARK-21180:
Summary: Remove conf from stats functions since now we have conf
in LogicalPlan
Key: SPARK-21180
URL: https://issues.apache.org/jira/browse/SPARK-21180
Project: Spark
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Zhenhua Wang commented on SPARK-17129:
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[~mbasmanova] Thanks for working on it~ I'll
Zhenhua Wang created SPARK-21237:
Summary: Invalidate stats once table data is changed
Key: SPARK-21237
URL: https://issues.apache.org/jira/browse/SPARK-21237
Project: Spark
Issue Type: Sub-t
Zhenhua Wang created SPARK-21324:
Summary: Improve statistics test suites
Key: SPARK-21324
URL: https://issues.apache.org/jira/browse/SPARK-21324
Project: Spark
Issue Type: Sub-task
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Zhenhua Wang updated SPARK-21083:
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Description:
1. When we first analyze without `noscan` and then analyze with `noscan`, the
table
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Zhenhua Wang updated SPARK-21083:
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Summary: Do not remove correct stats when re-analyze (was: Consider
staleness when collecting co
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Zhenhua Wang updated SPARK-21083:
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Description: (was: 1. When we first analyze without `noscan` and then
analyze with `noscan`,
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Zhenhua Wang updated SPARK-21083:
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Summary: Store zero size and row count after analyzing empty table (was:
Do not remove correct s
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Zhenhua Wang edited comment on SPARK-17074 at 10/22/16 12:52 PM:
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Zhenhua Wang updated SPARK-18000:
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Summary: Aggregation function for computing endpoints for histograms (was:
Aggregation function
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Zhenhua Wang updated SPARK-18000:
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Description:
For a column, we will generate a equi-width or equi-height histogram, depending
on
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Zhenhua Wang updated SPARK-17074:
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Description:
We support two kinds of histograms:
- Equi-width histogram: We have a fixed w
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Zhenhua Wang commented on SPARK-18000:
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This issue is included in another issue SPAR
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Zhenhua Wang updated SPARK-18000:
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Comment: was deleted
(was: This issue is included in another issue SPARK-17881, so I'll close thi
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Zhenhua Wang commented on SPARK-17881:
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This issue is included in another issue SPAR
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Zhenhua Wang closed SPARK-17881.
Resolution: Duplicate
> Aggregation function for generating string histograms
> ---
Zhenhua Wang created SPARK-18111:
Summary: Wrong ApproximatePercentile answer when multiple records
have the minimum value
Key: SPARK-18111
URL: https://issues.apache.org/jira/browse/SPARK-18111
Proje
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Zhenhua Wang updated SPARK-18111:
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Description:
When multiple records have the minimum value, the answer of
ApproximatePercentile i
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Zhenhua Wang updated SPARK-18111:
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Description:
When multiple records have the minimum value, the answer of
ApproximatePercentile i
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Zhenhua Wang commented on SPARK-18111:
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[~srowen] The minimum is not only skipped on
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Zhenhua Wang edited comment on SPARK-18111 at 10/27/16 12:46 AM:
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Zhenhua Wang edited comment on SPARK-18111 at 10/27/16 12:46 AM:
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Zhenhua Wang updated SPARK-18111:
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Description:
When multiple records have the minimum value, the answer of
ApproximatePercentile i
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Zhenhua Wang commented on SPARK-18111:
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[~srowen] Sorry for the ambiguous example. I
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Zhenhua Wang edited comment on SPARK-18111 at 10/27/16 8:31 AM:
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Zhenhua Wang edited comment on SPARK-18111 at 10/27/16 8:35 AM:
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Zhenhua Wang commented on SPARK-18111:
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Yes, it says '5'. Because the samples in Qua
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Zhenhua Wang commented on SPARK-18111:
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Everytime it calls compress(), it will lose
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Zhenhua Wang updated SPARK-17079:
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Description: We decide if broadcast join should be used based on the
cardinality and size of join
Zhenhua Wang created SPARK-18149:
Summary: build side decision based on cbo
Key: SPARK-18149
URL: https://issues.apache.org/jira/browse/SPARK-18149
Project: Spark
Issue Type: Sub-task
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Zhenhua Wang commented on SPARK-17791:
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Hi Ioana,
The current implementation is NOT
Zhenhua Wang created SPARK-18221:
Summary: Wrong ApproximatePercentile answer when multiple records
have the minimum value(for branch 2.0)
Key: SPARK-18221
URL: https://issues.apache.org/jira/browse/SPARK-18221
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Zhenhua Wang commented on SPARK-18221:
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Oh, sorry, should I close this one?
> Wrong
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Zhenhua Wang updated SPARK-18000:
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Description:
The MapAggregate function Computes frequency for each distinct non-null value
of a
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Zhenhua Wang updated SPARK-18000:
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Description:
This function Computes frequency for each distinct non-null value of a column.
It re
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Zhenhua Wang updated SPARK-18000:
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Summary: Aggregation function for computing bins (distinct value, count)
pairs for equi-width his
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Zhenhua Wang updated SPARK-18000:
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Description:
This function computes the count for each distinct non-null value of a column.
It re
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Zhenhua Wang commented on SPARK-17446:
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This issue is resolved after
[SPARK-17470|h
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Zhenhua Wang resolved SPARK-17446.
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Resolution: Fixed
Fix Version/s: 2.1.0
> no total size for data source tables in InMemor
Zhenhua Wang created SPARK-18429:
Summary: implement a new Aggregate for CountMinSketch
Key: SPARK-18429
URL: https://issues.apache.org/jira/browse/SPARK-18429
Project: Spark
Issue Type: New
Zhenhua Wang created SPARK-18559:
Summary: Also restrict the lower bound of relativeSD in HLL++
Key: SPARK-18559
URL: https://issues.apache.org/jira/browse/SPARK-18559
Project: Spark
Issue Ty
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Zhenhua Wang updated SPARK-18559:
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Summary: Restrict the lower bound of relativeSD in HLL++ (was: Also
restrict the lower bound of
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Zhenhua Wang updated SPARK-18559:
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Description: In HyperLogLogPlusPlus, if the relative error is so small that
p >= 19, it will caus
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Zhenhua Wang updated SPARK-18559:
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Summary: Fix HLL++ with small relative error (was: Restrict the lower
bound of relativeSD in HLL
Zhenhua Wang created SPARK-37846:
Summary: TaskContext is used at wrong place in
BlockManagerDecommissionIntegrationSuite
Key: SPARK-37846
URL: https://issues.apache.org/jira/browse/SPARK-37846
Projec
Zhenhua Wang created SPARK-38140:
Summary: Column stats (min, max) for timestamp type is not
consistent with the value due to time zone difference
Key: SPARK-38140
URL: https://issues.apache.org/jira/browse/SPARK-
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Zhenhua Wang updated SPARK-38140:
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Description:
Currently timestamp column's stats (min/max) are stored in UTC in metastore,
and w
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Zhenhua Wang updated SPARK-38140:
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Description:
Currently timestamp column's stats (min/max) are stored in UTC in metastore,
and w
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Zhenhua Wang updated SPARK-38140:
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Summary: Desc column stats (min, max) for timestamp type is not consistent
with the value due to
Zhenhua Wang created SPARK-22208:
Summary: Improve percentile_approx by not rounding up targetError
and starting from index 0
Key: SPARK-22208
URL: https://issues.apache.org/jira/browse/SPARK-22208
Pr
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Zhenhua Wang commented on SPARK-22179:
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[~srowen] Yes, I planned to close this after
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Zhenhua Wang commented on SPARK-22164:
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[~ron8hu] I don't think histogram can help w
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Zhenhua Wang closed SPARK-22164.
> support histogram in estimating the cardinality of aggregate (or group-by)
> operator
>
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Zhenhua Wang resolved SPARK-22164.
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Resolution: Won't Fix
Target Version/s: (was: 2.3.0)
> support histogram in estimat
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Zhenhua Wang edited comment on SPARK-22164 at 10/12/17 3:21 PM:
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Zhenhua Wang created SPARK-22285:
Summary: Change implementation of ApproxCountDistinctForIntervals
to TypedImperativeAggregate
Key: SPARK-22285
URL: https://issues.apache.org/jira/browse/SPARK-22285
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Zhenhua Wang updated SPARK-22285:
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Description:
The current implementation of `ApproxCountDistinctForIntervals` is
`ImperativeAggre
Zhenhua Wang created SPARK-22310:
Summary: Refactor join estimation to incorporate estimation logic
for different kinds of statistics
Key: SPARK-22310
URL: https://issues.apache.org/jira/browse/SPARK-22310
Zhenhua Wang created SPARK-22326:
Summary: Remove unnecessary hashCode and equals methods
Key: SPARK-22326
URL: https://issues.apache.org/jira/browse/SPARK-22326
Project: Spark
Issue Type: Bu
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Zhenhua Wang updated SPARK-17074:
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Affects Version/s: (was: 2.0.0)
2.3.0
> generate equi-height histogram
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Zhenhua Wang updated SPARK-22310:
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Issue Type: Sub-task (was: Improvement)
Parent: SPARK-21975
> Refactor join estimation t
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Zhenhua Wang updated SPARK-22310:
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Issue Type: Improvement (was: Sub-task)
Parent: (was: SPARK-16026)
> Refactor join e
Zhenhua Wang created SPARK-22394:
Summary: Redundant synchronization for metastore access
Key: SPARK-22394
URL: https://issues.apache.org/jira/browse/SPARK-22394
Project: Spark
Issue Type: Im
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Zhenhua Wang commented on SPARK-22394:
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[~cloud_fan] [~smilegator] [~rxin] Do I unde
Zhenhua Wang created SPARK-22400:
Summary: rename some APIs and classes to make their meaning clearer
Key: SPARK-22400
URL: https://issues.apache.org/jira/browse/SPARK-22400
Project: Spark
Is
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Zhenhua Wang updated SPARK-22400:
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Description:
Both `ReadSupport` and `ReadTask` have a method called `createReader`, but they
cre
Zhenhua Wang created SPARK-22475:
Summary: show histogram in DESC COLUMN command
Key: SPARK-22475
URL: https://issues.apache.org/jira/browse/SPARK-22475
Project: Spark
Issue Type: Sub-task
Zhenhua Wang created SPARK-22515:
Summary: Estimation relation size based on numRows * rowSize
Key: SPARK-22515
URL: https://issues.apache.org/jira/browse/SPARK-22515
Project: Spark
Issue Typ
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Zhenhua Wang updated SPARK-22515:
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Description: Currently, relation size is computed as the sum of file size,
which is error-prone b
Zhenhua Wang created SPARK-22529:
Summary: No need to propagate catalog stats when cbo is disabled
Key: SPARK-22529
URL: https://issues.apache.org/jira/browse/SPARK-22529
Project: Spark
Issue
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Zhenhua Wang updated SPARK-22529:
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Summary: Only sizeInBytes in catalog stats needs to be propagated when cbo
is disabled (was: No
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Zhenhua Wang updated SPARK-22529:
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Description: Currently, relation stats is the same whether cbo is enabled
or not. While relation
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Zhenhua Wang updated SPARK-22529:
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Summary: Relation stats should be consistent with other plans based on cbo
config (was: Only siz
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Zhenhua Wang updated SPARK-17129:
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Description: Support statistics collection and cardinality estimation for
partitioned tables. (w
Zhenhua Wang created SPARK-22662:
Summary: Failed to prune columns after rewriting predicate subquery
Key: SPARK-22662
URL: https://issues.apache.org/jira/browse/SPARK-22662
Project: Spark
Is
Zhenhua Wang created SPARK-19271:
Summary: Non-cbo estimation of aggregate
Key: SPARK-19271
URL: https://issues.apache.org/jira/browse/SPARK-19271
Project: Spark
Issue Type: Sub-task
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Zhenhua Wang updated SPARK-19271:
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Summary: Change non-cbo estimation of aggregate (was: Non-cbo estimation
of aggregate)
> Change
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Zhenhua Wang updated SPARK-19350:
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Summary: Cardinality estimation of Limit and Sample (was: Improve
cardinality estimation of Limi
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Zhenhua Wang updated SPARK-19350:
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Description:
Currently, LocalLimit/GlobalLimit/Sample propagates the same row count and
column s
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Zhenhua Wang updated SPARK-17079:
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Description: We decide if broadcast join should be used based on the
cardinality and size of join
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Zhenhua Wang updated SPARK-17077:
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Summary: Cardinality estimation of group-by, project, union, etc. (was:
cardinality estimates of
Zhenhua Wang created SPARK-17625:
Summary: expectedOutputAttributes should be set when converting
SimpleCatalogRelation to LogicalRelation
Key: SPARK-17625
URL: https://issues.apache.org/jira/browse/SPARK-17625
Zhenhua Wang created SPARK-17642:
Summary: support DESC FORMATTED TABLE COLUMN command to show
column-level statistics
Key: SPARK-17642
URL: https://issues.apache.org/jira/browse/SPARK-17642
Project:
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Zhenhua Wang updated SPARK-17642:
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Description:
Support DESC FORMATTED TABLE COLUMN command to show column-level statistics.
We shou
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Zhenhua Wang commented on SPARK-17074:
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Hi, there's something I want to discuss here
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Zhenhua Wang commented on SPARK-17074:
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OK, I'll try to extend QuantileSummaries to
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Zhenhua Wang commented on SPARK-17626:
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This is pretty good. We can use star schema
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Zhenhua Wang edited comment on SPARK-17626 at 10/8/16 12:19 PM:
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Zhenhua Wang created SPARK-17881:
Summary: Aggregation function for generating string histograms
Key: SPARK-17881
URL: https://issues.apache.org/jira/browse/SPARK-17881
Project: Spark
Issue T
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Zhenhua Wang commented on SPARK-17074:
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Well, I've got stuck here for a few days. I
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Zhenhua Wang edited comment on SPARK-17074 at 10/13/16 12:29 AM:
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Zhenhua Wang edited comment on SPARK-17074 at 10/13/16 12:55 AM:
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Zhenhua Wang commented on SPARK-17827:
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[~srowen] Thanks for notification. [~robbins
Zhenhua Wang created SPARK-17997:
Summary: Aggregation function for counting distinct values for
multiple intervals
Key: SPARK-17997
URL: https://issues.apache.org/jira/browse/SPARK-17997
Project: Spa
Zhenhua Wang created SPARK-18000:
Summary: Aggregation function for computing endpoints for numeric
histograms
Key: SPARK-18000
URL: https://issues.apache.org/jira/browse/SPARK-18000
Project: Spark
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Zhenhua Wang updated SPARK-17074:
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Description:
We support two kinds of histograms:
- Equi-width histogram: We have a fixed w
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