Brett Randall created SPARK-15723:
-------------------------------------
Summary: SimpleDateParamSuite test is locale-fragile and relies on
deprecated short TZ name
Key: SPARK-15723
URL: https://issues.apache.org/jira/browse/SPARK-15723
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 1.6.1
Reporter: Brett Randall
Priority: Minor
{{org.apache.spark.status.api.v1.SimpleDateParamSuite}} has this assertion:
{code}
new SimpleDateParam("2015-02-20T17:21:17.190EST").timestamp should be
(1424470877190L)
{code}
This test is fragile and fails when executing in an environment where the local
default timezone causes {{EST}} to be interpreted as something other than US
Eastern Standard Time. If your local timezone is {{Australia/Sydney}}, then
{{EST}} equates to {{GMT+10}} and you will get:
{noformat}
date parsing *** FAILED ***
1424413277190 was not equal to 1424470877190 (SimpleDateParamSuite.scala:29)
{noformat}
In short, {{SimpleDateFormat}} is sensitive to the local default {{TimeZone}}
when interpreting short zone names. According to the {{TimeZone}} javadoc,
they ought not be used:
{quote}
Three-letter time zone IDs
For compatibility with JDK 1.1.x, some other three-letter time zone IDs (such
as "PST", "CTT", "AST") are also supported. However, their use is deprecated
because the same abbreviation is often used for multiple time zones (for
example, "CST" could be U.S. "Central Standard Time" and "China Standard
Time"), and the Java platform can then only recognize one of them.
{quote}
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