[jira] [Assigned] (TAJO-1266) Too many logs when writing a parquet relation

["DaeMyung Kang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TAJO-1266?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

DaeMyung Kang reassigned TAJO-1266:
-----------------------------------

    Assignee: DaeMyung Kang

> Too many logs when writing a parquet relation
> ---------------------------------------------
>
>                 Key: TAJO-1266
>                 URL: https://issues.apache.org/jira/browse/TAJO-1266
>             Project: Tajo
>          Issue Type: Improvement
>            Reporter: Jihoon Son
>            Assignee: DaeMyung Kang
>
> See the title.
> The parquet writer emits too many logs by default.
> Here is a part of the whole log.
> {noformat}
> Dec 22, 2014 3:28:59 PM parquet.Log info
> INFO: written 337B for [p_retailprice] DOUBLE: 737,002 values, 79B raw, 79B comp, 6 pages, encodings: [PLAIN_DICTIONARY, BIT_PACKED, RLE], dic { 2 entries, 16B raw, 2B comp}
> Dec 22, 2014 3:28:59 PM parquet.Log info
> INFO: written 790B for [p_comment] BINARY: 737,002 values, 143B raw, 143B comp, 11 pages, encodings: [PLAIN_DICTIONARY, BIT_PACKED, RLE], dic { 2 entries, 34B raw, 2B comp}
> Dec 22, 2014 3:28:59 PM parquet.Log info
> INFO: written 337B for [s_suppkey] INT64: 737,002 values, 79B raw, 79B comp, 6 pages, encodings: [PLAIN_DICTIONARY, BIT_PACKED, RLE], dic { 2 entries, 16B raw, 2B comp}
> {noformat}
> As you can see, a new log is emitted even when only 337B is additionally written.
> This will significantly degrade the write performance, so we need to turn off the parquet log by default.



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