Timestamps inserted with GMT calendar are 1 hour later when subsequently read with GMT calendar
(Server Mode Only).
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Key: DERBY-4582
URL: https://issues.apache.org/jira/browse/DERBY-4582
Project: Derby
Issue Type: Bug
Affects Versions: 10.5.3.0
Environment: Windows XP Professional Version 2002 Service Pack 3, Central Standard
Time Zone (America/Chicago)
Reporter: Keith Kruse
This issue only appears to happen in Network Server/Client mode. Embedded mode does not have
the issue.
My timezone is American/Chicago. Saving timestamps with values for the 6 hours prior to DST
start are being read back in as values 1 hour later than written. (I believe the issue happens
on the write because values written in Network Server/Client mode and read in Embedded mode
are incorrect, while values written and read in Embedded mode are corect.)
Values between 3/13/2010 - 20:00 CST and 3/14/2010 - 02:00 CST will return timstamps 1 hour
off. The "setTimestamp" method is being passed a GMT calendar with the timestamp:
I have a complete test class I can attach, but here is a summary:
private final TimeZone gmtTZ = TimeZone.getTimeZone("GMT");
private final Calendar gmtCal = Calendar.getInstance(gmtTZ);
...
String sql = "INSERT INTO app.dst_test (id, gmt_timestamp, milli_time) VALUES(?,?,?)";
String sql2 = "SELECT * from app.dst_test where id=?";
...
ps.setTimestamp(2, ts, gmtCal);
...
Timestamp tsRead = rs.getTimestamp("gmt_timestamp", gmtCal);
...
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