Anything in your logs that might give you a clue? Master logs? HDFS NameNode logs? St.Ack
On Thu, Feb 27, 2014 at 7:53 AM, kiran <kiran.sarvabho...@gmail.com> wrote: > Hi All, > > We have been experiencing severe data loss issues from few hours. There are > some wierd things going on in the cluster. We were unable to locate the > data even in hdfs > > Hbase version 0.94.1 > > Here is the wierd things that are going on: > > 1) Table which was once 1TB has now become 170GB with many of the regions > which we once 7gb are now becoming few MB's. We are no clue what is > happening at all > > 2) Table is splitting (or what ever) (100 regions have become 200 regions) > and ours is constantregionsplitpolicy with region size 20gb. I don't know > why it is even spltting > > 3) HDFS namenode dump size which we periodically backup is decreasing > > 4) And there is a region chain with start keys and end keys as, I can't > copy paste the exact thing. For example > > K1.xxx K2.xyz > K2.xyz K3.xyz,138798010000.xyp > K3.xyz,138798010000.xyp K4.xyq > > I have never seen a wierd start key and end key like this. We also suspect > a failed split of a region around 20GB. We looked at logs many times but > unable to get any sense out of it. Please help us out and we can't afford > data loss. > > Yesterday, There was an cluster crash of root region but we thought we > sucessfully restored that.But things did n't go that way.... There was a > consitent data loss after that. > > > -- > Thank you > Kiran Sarvabhotla > > -----Even a correct decision is wrong when it is taken late >
