[
https://issues.apache.org/jira/browse/DATAFU-23?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13883613#comment-13883613
]
Matthew Hayes commented on DATAFU-23:
-------------------------------------
PadZero doesn't strike me as something that should be added to DataFu. I think
what would be more generally useful is to create truncate functions that can
operate on the datetime object directly and return an object on the same type.
> Create datafu.pig.util.PadZero to pad integers < 10 with 0s
> -----------------------------------------------------------
>
> Key: DATAFU-23
> URL: https://issues.apache.org/jira/browse/DATAFU-23
> Project: DataFu
> Issue Type: Improvement
> Reporter: Russell Jurney
> Attachments: DATAFU-23.patch
>
>
> /* Now group by time down to the hour, our time series granularity */
> grouped_by_time = GROUP bytes_in_out BY (GetYear(date_time),
> GetMonth(date_time), GetDay(date_time), GetHour(date_time));
> bytes_per_hour = FOREACH grouped_by_time GENERATE FLATTEN(group) AS (year,
> month, day, hour),
> SUM(bytes_in_out.sc_bytes)
> AS total_sc_bytes,
> SUM(bytes_in_out.cs_bytes)
> AS total_cs_bytes;
> /* Now convert time elements back into a key for HBase */
> bytes_per_hour = FOREACH bytes_per_hour GENERATE ToDate(StringConcat(year,
> '-', month, '-', day, 'T', hour, ':00:00.000Z')) AS date_time,
> total_sc_bytes,
> total_cs_bytes;
> The previous code will erroneously generate bad ISO8601 dates, looking like
> this: "2005-1-1:1:00:00.000Z"
> Therefore a PadZero utility is needed to regenerate ISO8601 keys after
> grouping by date pieces.
--
This message was sent by Atlassian JIRA
(v6.1.5#6160)
