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From Hyunsik Choi <hyunsik.c...@gmail.com>
Subject Re: starting difficulties
Date Fri, 25 Jul 2014 16:38:43 GMT
Hi Christian,

Above all, thank you for your interest in Tajo.

The problem seems to be an old bug.
Are you using Tajo 0.9.0? Did you get Tajo via git?

Best regards,
Hyunsik

On Fri, Jul 25, 2014 at 9:23 PM, Christian Schwabe
<Christian.Schwabe@gmx.com> wrote:
> Hello guys,
>
> this is the first time for me to write to an email list. Sorry for any wrong
> formatting.
> I am a student of computer science and use the framework Apache Tajo as part
> of my thesis. However, I have initial teething problems and unfortunately do
> not know how to remedy them.
>
> First, I want to describe what steps do I do to start Tajo:
> 1) Start Tajo with tajo-start.sh
> 2) Create a new Table
> 3) Start bash tsql
>
> Here details to my table contents which is composed from a csv file:
>
> default> SELECT * from table1;
> id,  name,  score,  type
> -------------------------------
> 1,  abc,  1.1,  a
> 2,  def,  2.3,  b
> 3,  ghi,  3.4,  c
> 4,  jkl,  4.5,  d
> 5,  mno,  5.6,  e
> (5 rows, 0.275 sec, 59 B selected)
>
> Everything seems to work up here. Also substr () or concat () function. Do I
> use now but the count (*) or sum () I get the following exception:
>
> default> SELECT count(*) FROM table1;
> ERROR: 1
> java.lang.ArrayIndexOutOfBoundsException: 1
> at org.apache.tajo.util.BitArray.fromByteBuffer(BitArray.java:84)
> at org.apache.tajo.storage.RawFile$RawFileScanner.next(RawFile.java:243)
> at
> org.apache.tajo.engine.planner.physical.SeqScanExec.next(SeqScanExec.java:254)
> at
> org.apache.tajo.engine.planner.physical.HashAggregateExec.compute(HashAggregateExec.java:51)
> at
> org.apache.tajo.engine.planner.physical.HashAggregateExec.next(HashAggregateExec.java:87)
> at
> org.apache.tajo.engine.planner.physical.StoreTableExec.next(StoreTableExec.java:77)
> at org.apache.tajo.worker.Task.run(Task.java:425)
> at org.apache.tajo.worker.TaskRunner$1.run(TaskRunner.java:406)
> at java.lang.Thread.run(Thread.java:744)
>
>
> Can you tell me what I'm doing wrong at this point that I have neither the
> count (*) still can use sum ()?
> Is this a known problem? Is it fixed? When will it be fixed? How can I fix
> it myself? I suppose that I have a wrong configuration, although I have not
> had much konfikuriert. Because I can hardly imagine that such trivial
> functionalities not in my used version 0.9.0 are available.
>
> Kind regards,
> Christian Schwabe

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