Re: Should Taking A Snapshot Work Even If Balancer Is Moving A Few Regions Around?

2018-03-23 Thread Saad Mufti
Thanks. Saad On Wed, Mar 21, 2018 at 3:04 PM, Ted Yu wrote: > Looking at > hbase-client/src/main/java/org/apache/hadoop/hbase/client/Admin.java in > branch-1.4 : > > boolean[] setSplitOrMergeEnabled(final boolean enabled, final boolean > synchronous, >

Re: Should Taking A Snapshot Work Even If Balancer Is Moving A Few Regions Around?

2018-03-23 Thread Saad Mufti
Thanks. Saad On Wed, Mar 21, 2018 at 2:33 PM, Vladimir Rodionov wrote: > >>So my question is whether taking a snapshot is supposed to work even with > >>regions being moved around. In our case it is usually only a couple here > >>and there. > > No, if region was moved, split or merged duri

Anyone Have A Workaround For HBASE-19681?

2018-03-23 Thread Saad Mufti
We are facing the exact same symptoms in HBase 1.4.0 running on AWS EMR based cluster, and desperately need to take a snapshot to feed a downstream job. So far we have tried using the "assign" command on all regions involved to move them around but the snapshot still fails. Also saw the same error

ASYNC_WAL and visibility

2018-03-23 Thread Viacheslav Krot
Hi all, I cannot find any good information about ASYNC_WAL semantics. As much as I understand the worst I can get - data loss in case of region failure. But the question I have - can it affect visibility in any way? Does it still follow the principle "When a client receives a "success" response for

ASYNC_WAL and visibility

2018-03-23 Thread Viacheslav Krot
Hi all, I cannot find any good information about ASYNC_WAL semantics. As much as I understand the worst I can get - data loss in case of region failure. But the question I have - can it affect visibility in any way? Does it still follow the principle "When a client receives a "success" response for