RE: Server time zone !
You could just use the java.util.TimeZone to get the current timezone. Ashish -Original Message- From: Zheng Shao [mailto:zsh...@gmail.com] Sent: Thursday, February 12, 2009 2:31 PM To: hive-dev@hadoop.apache.org; shyam_sar...@yahoo.com Subject: Re: Server time zone ! Not yet. I think JVM take the environment variable TZ for that purpose for all java-related functions. In build-common.xml you should find the following: This makes sure all current UDFs related to time/date are using the US/Pacific time zone. (Note: all these UDFs are operating on String and Integer types right now) Zheng On Thu, Feb 12, 2009 at 2:21 PM, Shyam Sarkar wrote: > Is there any 'Server's time zone' implementation inside Hive? For > proper implementation of TIMESTAMP data type, this is necessay to > translate from stored string type. I am focusing on MySQL 6.0 (with > limited properties) for TIMESTAMP. > > http://dev.mysql.com/doc/refman/6.0/en/timestamp.html > > Thanks, > Shyam > > > > -- Yours, Zheng
Re: Server time zone !
Yeah that's the eventually goal. Currently the user has to manually convert the TIMESTAMP to String and partition on String. Since we do NOT allow range partitioning, this should provide exactly the same semantics. The only thing is that user needs to convert TIMESTAMP to STRING (and back when needed) by himself for now. Zheng On Thu, Feb 12, 2009 at 3:00 PM, Shyam Sarkar wrote: > So eventually UDFs need to be modified to operate on TIMESTAMP data type ! > > Can we partition a table based on TIMESTAMP ? We should because it is > really important for users in many cases. > > Shyam > > > > --- On Thu, 2/12/09, Zheng Shao wrote: > > > From: Zheng Shao > > Subject: Re: Server time zone ! > > To: hive-dev@hadoop.apache.org, shyam_sar...@yahoo.com > > Date: Thursday, February 12, 2009, 2:31 PM > > Not yet. I think JVM take the environment variable TZ for > > that purpose for > > all java-related functions. > > > > In build-common.xml you should find the following: > > > value="US/Pacific"/> > > > > This makes sure all current UDFs related to time/date are > > using the > > US/Pacific time zone. (Note: all these UDFs are operating > > on String and > > Integer types right now) > > > > Zheng > > > > On Thu, Feb 12, 2009 at 2:21 PM, Shyam Sarkar > > wrote: > > > > > Is there any 'Server's time zone' > > implementation inside Hive? For proper > > > implementation of TIMESTAMP data type, this is > > necessay to translate from > > > stored string type. I am focusing on MySQL 6.0 (with > > limited properties) for > > > TIMESTAMP. > > > > > > http://dev.mysql.com/doc/refman/6.0/en/timestamp.html > > > > > > Thanks, > > > Shyam > > > > > > > > > > > > > > > > > > -- > > Yours, > > Zheng > > > > -- Yours, Zheng
Re: Server time zone !
So eventually UDFs need to be modified to operate on TIMESTAMP data type ! Can we partition a table based on TIMESTAMP ? We should because it is really important for users in many cases. Shyam --- On Thu, 2/12/09, Zheng Shao wrote: > From: Zheng Shao > Subject: Re: Server time zone ! > To: hive-dev@hadoop.apache.org, shyam_sar...@yahoo.com > Date: Thursday, February 12, 2009, 2:31 PM > Not yet. I think JVM take the environment variable TZ for > that purpose for > all java-related functions. > > In build-common.xml you should find the following: > value="US/Pacific"/> > > This makes sure all current UDFs related to time/date are > using the > US/Pacific time zone. (Note: all these UDFs are operating > on String and > Integer types right now) > > Zheng > > On Thu, Feb 12, 2009 at 2:21 PM, Shyam Sarkar > wrote: > > > Is there any 'Server's time zone' > implementation inside Hive? For proper > > implementation of TIMESTAMP data type, this is > necessay to translate from > > stored string type. I am focusing on MySQL 6.0 (with > limited properties) for > > TIMESTAMP. > > > > http://dev.mysql.com/doc/refman/6.0/en/timestamp.html > > > > Thanks, > > Shyam > > > > > > > > > > > -- > Yours, > Zheng
Re: Server time zone !
Not yet. I think JVM take the environment variable TZ for that purpose for all java-related functions. In build-common.xml you should find the following: This makes sure all current UDFs related to time/date are using the US/Pacific time zone. (Note: all these UDFs are operating on String and Integer types right now) Zheng On Thu, Feb 12, 2009 at 2:21 PM, Shyam Sarkar wrote: > Is there any 'Server's time zone' implementation inside Hive? For proper > implementation of TIMESTAMP data type, this is necessay to translate from > stored string type. I am focusing on MySQL 6.0 (with limited properties) for > TIMESTAMP. > > http://dev.mysql.com/doc/refman/6.0/en/timestamp.html > > Thanks, > Shyam > > > > -- Yours, Zheng
