wenxue lin created KYLIN-2952:
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Summary: dynamic cube build for time(statTime and endTime)
Key: KYLIN-2952
URL: https://issues.apache.org/jira/browse/KYLIN-2952
Project: Kylin
Issue Type: Improvement
Components: REST Service
Affects Versions: v1.6.0
Environment: linux
Reporter: wenxue lin
Assignee: Zhong,Jason
Priority: Minor
ex => curl -X PUT -u "ADMIN:KYLIN" -H
"Content-Type:application/json;charset=utf-8" -d
'{"startTime":1508601600000,"endTime":1508688000000,"buildType":"BUILD"}'
http://host:port/kylin/api/cubes/bi_dispatch_waiting_service_cube/rebuild
desc :
rest api param is startTime:1508601600000(2017-10-22) and
endTime:1508688000000(2017-10-23)， but the actual time of building the cube is
1 day ahead of schedule (actually 8 hours ahead of schedule)
=》【2017-10-21~2017-10-22】，But using kylinUI build without question, the actual
view kylin source, found that is because the kylin on the server side source
code for configuration of GMT rather than use the timezone of fixed GMT + 8,
and front-end UI will according to the configuration of the timezone is
transformed to the time of the page to add GMT + 8 time, then the back-end to
GMT + 8 time in into GMT time, so the kylinUI cube build time without error,
and using restAPI build cube time not making timezone 8 hours is not accurate
time difference problem。
*for code:*
kylinProperties.js
this.getTimeZone = function () {
if (!this.timezone) {
this.timezone = this.getProperty("kylin.rest.timezone").trim();
}
return this.timezone;
}
org.apache.kylin.cube.CubeSegment
public static String makeSegmentName(long startDate, long endDate, long
startOffset, long endOffset) {
if (startOffset != 0 || endOffset != 0) {
if (startOffset == 0 && (endOffset == 0 || endOffset ==
Long.MAX_VALUE)) {
return "FULL_BUILD";
}
return startOffset + "_" + endOffset;
}
// using time
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMddHHmmss");
dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
return dateFormat.format(startDate) + "_" + dateFormat.format(endDate);
}
org.apache.kylin.common.util.DateFormat:
public static FastDateFormat getDateFormat(String datePattern) {
FastDateFormat r = formatMap.get(datePattern);
if (r == null) {
r = FastDateFormat.getInstance(datePattern,
TimeZone.getTimeZone("GMT")); // NOTE: this must be GMT to calculate epoch date
correctly
formatMap.put(datePattern, r);
}
return r;
}
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