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Posted to issues@spark.apache.org by "Yi Zhou (JIRA)" <ji...@apache.org> on 2015/08/27 10:49:45 UTC
[jira] [Updated] (SPARK-10310) [Spark SQL] All result records will
be popluated into ONE line during the script transform due to missing the
correct line/filed delimeter
[ https://issues.apache.org/jira/browse/SPARK-10310?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Yi Zhou updated SPARK-10310:
----------------------------
Summary: [Spark SQL] All result records will be popluated into ONE line during the script transform due to missing the correct line/filed delimeter (was: [Spark SQL] All result records will be popluated in ONE line due to missing the correct line/filed delimeter)
> [Spark SQL] All result records will be popluated into ONE line during the script transform due to missing the correct line/filed delimeter
> ------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-10310
> URL: https://issues.apache.org/jira/browse/SPARK-10310
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Yi Zhou
> Priority: Blocker
>
> There is real case using python stream script in Spark SQL query. We found that all result records were wroten in ONE line as input from "select" pipeline for python script and so it caused script will not identify each record.Other, filed separator in spark sql will be '^A' or '\001' which is inconsistent/incompatible the '\t' in Hive implementation.
> #################Key Query####################:
> CREATE VIEW temp1 AS
> SELECT *
> FROM
> (
> FROM
> (
> SELECT
> c.wcs_user_sk,
> w.wp_type,
> (wcs_click_date_sk * 24 * 60 * 60 + wcs_click_time_sk) AS tstamp_inSec
> FROM web_clickstreams c, web_page w
> WHERE c.wcs_web_page_sk = w.wp_web_page_sk
> AND c.wcs_web_page_sk IS NOT NULL
> AND c.wcs_user_sk IS NOT NULL
> AND c.wcs_sales_sk IS NULL --abandoned implies: no sale
> DISTRIBUTE BY wcs_user_sk SORT BY wcs_user_sk, tstamp_inSec
> ) clicksAnWebPageType
> REDUCE
> wcs_user_sk,
> tstamp_inSec,
> wp_type
> USING 'python sessionize.py 3600'
> AS (
> wp_type STRING,
> tstamp BIGINT,
> sessionid STRING)
> ) sessionized
> #############Key Python Script#################
> for line in sys.stdin:
> user_sk, tstamp_str, value = line.strip().split("\t")
> ############Result Records example from 'select' ##################
> ^V31^A3237764860^Afeedback^U31^A3237769106^Adynamic^T31^A3237779027^Areview
> ############Result Records example in format######################
> 31 3237764860 feedback
> 31 3237769106 dynamic
> 31 3237779027 review
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