Re: Duplicate Value Inserts in HBase
Hi Krishna, HBase will store them in the same row, same cell but you will have 2 versions. If you want to keep just one, setup the version=1 on the table side and only one will be stored. Is that what yo mean? JM 2014-10-21 8:29 GMT-04:00 Krishna Kalyan krishnakaly...@gmail.com: Hi, I have a HBase table which is populated from pig using PigStorage. While inserting, suppose for rowkey i have a duplicate value. Is there a way to prevent an update?. I want to maintain the version history for my values which are unique. Regards, Krishna
Re: Duplicate Value Inserts in HBase
Thanks Jean, If i put the same value in my table for a particular column for a rowkey i want HBase reject this value and retain old value with old time stamp. In other words update only when value changes. Regards, Krishna On Tue, Oct 21, 2014 at 6:02 PM, Jean-Marc Spaggiari jean-m...@spaggiari.org wrote: Hi Krishna, HBase will store them in the same row, same cell but you will have 2 versions. If you want to keep just one, setup the version=1 on the table side and only one will be stored. Is that what yo mean? JM 2014-10-21 8:29 GMT-04:00 Krishna Kalyan krishnakaly...@gmail.com: Hi, I have a HBase table which is populated from pig using PigStorage. While inserting, suppose for rowkey i have a duplicate value. Is there a way to prevent an update?. I want to maintain the version history for my values which are unique. Regards, Krishna
Re: Duplicate Value Inserts in HBase
You can do check and puts to validate if value is already there, but it's slower... 2014-10-21 8:50 GMT-04:00 Krishna Kalyan krishnakaly...@gmail.com: Thanks Jean, If i put the same value in my table for a particular column for a rowkey i want HBase reject this value and retain old value with old time stamp. In other words update only when value changes. Regards, Krishna On Tue, Oct 21, 2014 at 6:02 PM, Jean-Marc Spaggiari jean-m...@spaggiari.org wrote: Hi Krishna, HBase will store them in the same row, same cell but you will have 2 versions. If you want to keep just one, setup the version=1 on the table side and only one will be stored. Is that what yo mean? JM 2014-10-21 8:29 GMT-04:00 Krishna Kalyan krishnakaly...@gmail.com: Hi, I have a HBase table which is populated from pig using PigStorage. While inserting, suppose for rowkey i have a duplicate value. Is there a way to prevent an update?. I want to maintain the version history for my values which are unique. Regards, Krishna
Re: Duplicate Value Inserts in HBase
You can achieve what you want using versions and some hackery with timestamps Sent from my T-Mobile 4G LTE Device Original message From: Jean-Marc Spaggiari jean-m...@spaggiari.org Date:10/21/2014 9:02 AM (GMT-05:00) To: user user@hbase.apache.org Cc: Subject: Re: Duplicate Value Inserts in HBase You can do check and puts to validate if value is already there, but it's slower... 2014-10-21 8:50 GMT-04:00 Krishna Kalyan krishnakaly...@gmail.com: Thanks Jean, If i put the same value in my table for a particular column for a rowkey i want HBase reject this value and retain old value with old time stamp. In other words update only when value changes. Regards, Krishna On Tue, Oct 21, 2014 at 6:02 PM, Jean-Marc Spaggiari jean-m...@spaggiari.org wrote: Hi Krishna, HBase will store them in the same row, same cell but you will have 2 versions. If you want to keep just one, setup the version=1 on the table side and only one will be stored. Is that what yo mean? JM 2014-10-21 8:29 GMT-04:00 Krishna Kalyan krishnakaly...@gmail.com: Hi, I have a HBase table which is populated from pig using PigStorage. While inserting, suppose for rowkey i have a duplicate value. Is there a way to prevent an update?. I want to maintain the version history for my values which are unique. Regards, Krishna
Re: Duplicate Value Inserts in HBase
Thanks for you replies Jean,Dhaval On Tue, Oct 21, 2014 at 6:57 PM, Dhaval Shah prince_mithi...@yahoo.co.in wrote: You can achieve what you want using versions and some hackery with timestamps Sent from my T-Mobile 4G LTE Device Original message From: Jean-Marc Spaggiari jean-m...@spaggiari.org Date:10/21/2014 9:02 AM (GMT-05:00) To: user user@hbase.apache.org Cc: Subject: Re: Duplicate Value Inserts in HBase You can do check and puts to validate if value is already there, but it's slower... 2014-10-21 8:50 GMT-04:00 Krishna Kalyan krishnakaly...@gmail.com: Thanks Jean, If i put the same value in my table for a particular column for a rowkey i want HBase reject this value and retain old value with old time stamp. In other words update only when value changes. Regards, Krishna On Tue, Oct 21, 2014 at 6:02 PM, Jean-Marc Spaggiari jean-m...@spaggiari.org wrote: Hi Krishna, HBase will store them in the same row, same cell but you will have 2 versions. If you want to keep just one, setup the version=1 on the table side and only one will be stored. Is that what yo mean? JM 2014-10-21 8:29 GMT-04:00 Krishna Kalyan krishnakaly...@gmail.com: Hi, I have a HBase table which is populated from pig using PigStorage. While inserting, suppose for rowkey i have a duplicate value. Is there a way to prevent an update?. I want to maintain the version history for my values which are unique. Regards, Krishna
