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Posted to issues@drill.apache.org by "benj (Jira)" <ji...@apache.org> on 2019/11/14 10:35:00 UTC
[jira] [Updated] (DRILL-7444) JSON blank result on SELECT when too
much byte in multiple files on Drill embedded
[ https://issues.apache.org/jira/browse/DRILL-7444?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
benj updated DRILL-7444:
------------------------
Summary: JSON blank result on SELECT when too much byte in multiple files on Drill embedded (was: JSON blank result on SELECT when too much byte in multiple files on embedded)
> JSON blank result on SELECT when too much byte in multiple files on Drill embedded
> ----------------------------------------------------------------------------------
>
> 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_ when using +Drill embedded+.
> 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}
> The Version of the Drill 1.17 tested here is the latest at 2019-11-13
> This problem doesn't appears with Drill embedded 1.16
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