I was trying to have an Optimizer rule for the solr storage plugin that I'm
working on for this query. Trying to use SOLR field stats for this , so that
the query is faster..
Getting the below exception while transforming project to scan. Could you
please advise?
2016-03-15 08:20:35,149 [291801ee-33fc-064d-7aff-18391f15ae0e:foreman] DEBUG
o.a.d.e.p.s.h.DefaultSqlHandler - Drill Logical :
DrillScreenRel: rowcount = 1.0, cumulative cost = {60.1 rows, 320.1 cpu, 0.0
io, 0.0 network, 176.0 memory}, id = 49
DrillProjectRel(EXPR$0=[$0]): rowcount = 1.0, cumulative cost = {60.0 rows,
320.0 cpu, 0.0 io, 0.0 network, 176.0 memory}, id = 48
DrillAggregateRel(group=[{}], EXPR$0=[SUM($0)]): rowcount = 1.0, cumulative
cost = {60.0 rows, 320.0 cpu, 0.0 io, 0.0 network, 176.0 memory}, id = 46
DrillProjectRel($f0=[1]): rowcount = 20.0, cumulative cost = {40.0 rows,
80.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 44
DrillScanRel(table=[[solr, ANalert_494]], groupscan=[SolrGroupScan
[SolrScanSpec=SolrScanSpec [solrCoreName=ANalert_494,
solrUrl=http://localhost:20000/solr/ filter=[], solrDocFetchCount=-1,
aggreegation=[]], columns=[`*`]]]): rowcount = 20.0, cumulative cost = {20.0
rows, 0.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 26
2016-03-15 08:20:35,201 [291801ee-33fc-064d-7aff-18391f15ae0e:foreman] DEBUG
o.a.drill.exec.work.foreman.Foreman - 291801ee-33fc-064d-7aff-18391f15ae0e:
State change requested PENDING --> FAILED
org.apache.drill.exec.work.foreman.ForemanException: Unexpected exception
during fragment initialization: index (0) must be less than size (0)
at org.apache.drill.exec.work.foreman.Foreman.run(Foreman.java:255)
[drill-java-exec.jar:1.4.0]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
[na:1.8.0_65]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
[na:1.8.0_65]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_65]
Caused by: java.lang.IndexOutOfBoundsException: index (0) must be less than
size (0)
at
com.google.common.base.Preconditions.checkElementIndex(Preconditions.java:305)
~[com.google.guava-guava.jar:na]
at
com.google.common.base.Preconditions.checkElementIndex(Preconditions.java:284)
~[com.google.guava-guava.jar:na]
at
com.google.common.collect.EmptyImmutableList.get(EmptyImmutableList.java:80)
~[com.google.guava-guava.jar:na]
at org.apache.calcite.util.Pair$6.get(Pair.java:335)
~[org.apache.calcite-calcite-core.jar:1.4.0-drill-r10]
at
org.apache.drill.exec.planner.StarColumnHelper.containsStarColumnInProject(StarColumnHelper.java:60)
~[drill-java-exec.jar:1.4.0]
at
org.apache.drill.exec.planner.physical.visitor.StarColumnConverter.visitProject(StarColumnConverter.java:138)
~[drill-java-exec.jar:1.4.0]
at
org.apache.drill.exec.planner.physical.visitor.StarColumnConverter.visitProject(StarColumnConverter.java:45)
~[drill-java-exec.jar:1.4.0]
at
org.apache.drill.exec.planner.physical.ProjectPrel.accept(ProjectPrel.java:69)
~[drill-java-exec.jar:1.4.0]
at
org.apache.drill.exec.planner.physical.visitor.StarColumnConverter.visitScreen(StarColumnConverter.java:77)
~[drill-java-exec.jar:1.4.0]
at
org.apache.drill.exec.planner.physical.visitor.StarColumnConverter.visitScreen(StarColumnConverter.java:45)
~[drill-java-exec.jar:1.4.0]
at
org.apache.drill.exec.planner.physical.ScreenPrel.accept(ScreenPrel.java:64)
~[drill-java-exec.jar:1.4.0]
at
org.apache.drill.exec.planner.physical.visitor.StarColumnConverter.insertRenameProject(StarColumnConverter.java:72)
~[drill-java-exec.jar:1.4.0]
at
org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.convertToPrel(DefaultSqlHandler.java:326)
~[drill-java-exec.jar:1.4.0]
at
org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.getPlan(DefaultSqlHandler.java:175)
~[drill-java-exec.jar:1.4.0]
at
org.apache.drill.exec.planner.sql.DrillSqlWorker.getPlan(DrillSqlWorker.java:197)
~[drill-java-exec.jar:1.4.0]
Thanks,
Sudip
-----Original Message-----
From: Sudip Mukherjee [mailto:[email protected]]
Sent: 07 March 2016 PM 04:45
To: [email protected]
Subject: RE: Optimizing SUM(1) query
Hi,
Extremely sorry for the delayed response!
Basically , I am experimenting an Apache Solr plugin for Drill and tried to use
Tableau. On intial selection of a "Table" , I see these queries from drill
webui profile
SELECT * FROM (SELECT * FROM `solr`.`CSVStringData`) T LIMIT 0
SELECT * FROM (SELECT SUM(1) AS `COL` FROM `solr`.`CSVStringData`
`CSVStringData` HAVING COUNT(1)>0) T LIMIT 0
I have a dataset of 2,297,451,8 and when I try access that,the tableau screen
in kind of stuck in "Processing Request" for 5 minutes.
Thanks,
Sudip
-----Original Message-----
From: Andries Engelbrecht [mailto:[email protected]]
Sent: 20 February 2016 AM 03:42
To: [email protected]
Subject: Re: Optimizing SUM(1) query
What are you trying to do in Tableau that generates these queries?
Do you have the actual full query that is being generated?
Tableau has a number of customization features, wonder if it is possible to
optimize those settings to avoid this issue.
--Andries
> On Feb 19, 2016, at 10:16 AM, Sudip Mukherjee <[email protected]>
> wrote:
>
> Hi,
>
> Have anyone tried optimizing SUM(1) query in drill? Or is it implemented?
> Getting these query while using Tableau. Mostly probably it is trying to
> figure out NUMBER_OF_RECORDS.
>
> Thanks,
> Sudip
>
>
>
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