[jira] [Updated] (DRILL-7444) JSON blank result on SELECT when too much byte in multiple files

["benj (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-7444?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

benj updated DRILL-7444:
------------------------
    Description: 
2 files (a.json and b.json) and the concat of these 2 file (ab.json) produce different results on a simple _SELECT_.

Problem appears from a number of byte (~ 102 400 000 in my case)
{code:bash}
#!/bin/bash
# script gen.sh to reproduce the problem
for ((i=1;i<=$1;++i));
do
    echo -n '{"At":"'
    for j in {1..999};
    do
	echo -n 'aaaaabbbbb'
    done
    echo '"}'
done
{code}
{noformat}
== I ==
$ gen.sh 10000 > a.json
$ gen.sh 239 > b.json
$ wc -c *.json
100000000 a.json
  2390000 b.json
102390000 total
$ bash drill-embedded
apache drill> SELECT * FROM dfs.tmp.`*.json` LIMIT 1;
+--------------------+
|       At           |
+--------------------+
| aaaaabbbbaaaaab... |
+--------------------+
=> All is fine here


== II ==
$ gen.sh 10000 > a.json
$ gen.sh 240 > b.json
$ wc -c *.json
100000000 a.json
  2400000 b.json
102400000 total
$ bash drill-embedded
apache drill> SELECT * FROM dfs.tmp.`*.json` LIMIT 1;
+--------------------+
|       At           |
+--------------------+
|                    |
+--------------------+
=> In a surprising way field `At` is empty

== III ==
$ gen.sh 10240 > ab.json
$ wc -c *.json 
102400000 ab.json
$ bash drill-embedded
apache drill> SELECT * FROM dfs.tmp.`c.json` LIMIT 1;
+--------------------+ 
|        At          |
+--------------------+
| aaaaabbbbaaaaab... |
+--------------------+
=> All is fine here although the number of lines is equal to case II

{noformat}
 * This problem doesn't appears in Drill 1.16.
 * The Version of the Drill 1.17 tested here is the latest at 2019-11-13
  

  was:
2 files (a.json and b.json) and the concat of these 2 file (ab.json) produce different results on a simple _SELECT_.

Problem appears from a number of byte (~ 102 400 000 in my case)
{code:bash}
#!/bin/bash
# script gen.sh to reproduce the problem
for ((i=1;i<=$1;++i));
do
    echo -n '{"At":"'
    for j in {1..999};
    do
	echo -n 'aaaaabbbbb'
    done
    echo '"}'
done
{code}
{noformat}
== I ==
$ gen.sh 10000 > a.json
$ gen.sh 239 > b.json
$ wc -c *.json
100000000 a.json
  2390000 b.json
102390000 total

apache drill> SELECT * FROM dfs.tmp.`*.json` LIMIT 1;
+--------------------+
|       At           |
+--------------------+
| aaaaabbbbaaaaab... |
+--------------------+
=> All is fine here


== II ==
$ gen.sh 10000 > a.json
$ gen.sh 240 > b.json
$ wc -c *.json
100000000 a.json
  2400000 b.json
102400000 total

apache drill> SELECT * FROM dfs.tmp.`*.json` LIMIT 1;
+--------------------+
|       At           |
+--------------------+
|                    |
+--------------------+
=> In a surprising way field `At` is empty

== III ==
$ gen.sh 10240 > ab.json
$ wc -c *.json 
102400000 ab.json

apache drill> SELECT * FROM dfs.tmp.`c.json` LIMIT 1;
+--------------------+ 
|        At          |
+--------------------+
| aaaaabbbbaaaaab... |
+--------------------+
=> All is fine here although the number of lines is equal to case II

{noformat}

* This problem doesn't appears in Drill 1.16.
* The Version of the Drill 1.17 tested here is the latest at 2019-11-13
 


> JSON blank result on SELECT when too much byte in multiple files 
> -----------------------------------------------------------------
>
>                 Key: DRILL-7444
>                 URL: https://issues.apache.org/jira/browse/DRILL-7444
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Storage - JSON
>    Affects Versions: 1.17.0
>            Reporter: benj
>            Priority: Major
>
> 2 files (a.json and b.json) and the concat of these 2 file (ab.json) produce different results on a simple _SELECT_.
> Problem appears from a number of byte (~ 102 400 000 in my case)
> {code:bash}
> #!/bin/bash
> # script gen.sh to reproduce the problem
> for ((i=1;i<=$1;++i));
> do
>     echo -n '{"At":"'
>     for j in {1..999};
>     do
> 	echo -n 'aaaaabbbbb'
>     done
>     echo '"}'
> done
> {code}
> {noformat}
> == I ==
> $ gen.sh 10000 > a.json
> $ gen.sh 239 > b.json
> $ wc -c *.json
> 100000000 a.json
>   2390000 b.json
> 102390000 total
> $ bash drill-embedded
> apache drill> SELECT * FROM dfs.tmp.`*.json` LIMIT 1;
> +--------------------+
> |       At           |
> +--------------------+
> | aaaaabbbbaaaaab... |
> +--------------------+
> => All is fine here
> == II ==
> $ gen.sh 10000 > a.json
> $ gen.sh 240 > b.json
> $ wc -c *.json
> 100000000 a.json
>   2400000 b.json
> 102400000 total
> $ bash drill-embedded
> apache drill> SELECT * FROM dfs.tmp.`*.json` LIMIT 1;
> +--------------------+
> |       At           |
> +--------------------+
> |                    |
> +--------------------+
> => In a surprising way field `At` is empty
> == III ==
> $ gen.sh 10240 > ab.json
> $ wc -c *.json 
> 102400000 ab.json
> $ bash drill-embedded
> apache drill> SELECT * FROM dfs.tmp.`c.json` LIMIT 1;
> +--------------------+ 
> |        At          |
> +--------------------+
> | aaaaabbbbaaaaab... |
> +--------------------+
> => All is fine here although the number of lines is equal to case II
> {noformat}
>  * This problem doesn't appears in Drill 1.16.
>  * The Version of the Drill 1.17 tested here is the latest at 2019-11-13
>   



--
This message was sent by Atlassian Jira
(v8.3.4#803005)