Hi,
Hbase allows for throttling at any of the following levels (or a combination):
namespace, table, user. Further, the throttling can be on number of requests
and/or volume of data.
So, I’d like to understand:
1) Is throttling enabled by most of the end users?
2) If yes, which of the above
Hi,
Any insights into this issue?
Thanks,Sumit
From: Sumit Nigam <sumit_o...@yahoo.com.INVALID>
To: Hbase-user <user@hbase.apache.org>
Sent: Tuesday, November 29, 2016 10:02 PM
Subject: Multi-homed hosts with Hbase
Hi,
I am using multi-homed kerberized hosts wit
Hi,
I am using multi-homed kerberized hosts with hbase 0.98.
The /etc/hosts files are uniformly containing FQDNs for cluster nodes. However,
region server fails to register with master server with the error:
2016-11-17 15:05:47,700 WARN [regionserver54723] regionserver.HRegionServer:
error
in 1.2, but not sure why this quota exceeded error
with READ_SIZE then shows up.
Thanks,Sumit
From: Guanghao Zhang <zghao...@gmail.com>
To: user@hbase.apache.org; Sumit Nigam <sumit_o...@yahoo.com>
Sent: Thursday, September 22, 2016 12:49 PM
Subject: Re: Hbase throttling issues
No, did not try request number. I want to use size as my throttling factor.
Thanks again!
From: Guanghao Zhang <zghao...@gmail.com>
To: user@hbase.apache.org; Sumit Nigam <sumit_o...@yahoo.com>
Sent: Thursday, September 22, 2016 9:28 AM
Subject: Re: Hbase throttling issues
: Guanghao Zhang <zghao...@gmail.com>
To: user@hbase.apache.org; Sumit Nigam <sumit_o...@yahoo.com>
Sent: Thursday, September 22, 2016 7:37 AM
Subject: Re: Hbase throttling issues
All scan operations were throttled? Now it use the avg size of all previous
operations to check
Hi Hbase experts,
Our application is unable to scan or read from hbase tables, when throttling is
set. We are getting ThrottlingException every time. The error is seen more
frequently when the number of hbase pre splits is increased. The size tables
for which this error is showing is empty (
Hi Karthik,
As Ding said, eventually you need to watch your heap objects to understand what
produces so many objects in the first place.
CMS occupancy % defaults to 70%. Default values of block cache and in-memory
memstore sizes add up to around 75-80%. Which means you could get CMS to start
t;j...@merkleinc.com>
To: "user@hbase.apache.org" <user@hbase.apache.org>
Cc: Sumit Nigam <sumit_o...@yahoo.com>
Sent: Monday, April 4, 2016 11:07 PM
Subject: RE: Major compaction
I wrote a small program to do MC in a "smart" way here:
https://github.com/
Hi,
Are there major overheads to running major compaction frequently? As much as I
know, it produces one Hfile for a region and processes delete markers and
version related drops. So, if this process has happened once say. a few mins
back then another major compaction should ideally not cause
iven Hfile, as many KVs would be read at one time?
So, if I increase memstore size, I should also increase this value because
default value I believe is 10, which is probably too less.
Thanks,Sumit
From: Ted Yu <yuzhih...@gmail.com>
To: "user@hbase.apache.org" <user@h
Hi,
I have been informed that compacting (manual) the same hbase table takes same
amount of time even when done in quick succession. This seems counter-intuitive
because an already compacted table should not take same amount of time.
Also, what is the use of hbase.hstore.compaction.kv.max
n of hbase you are using? Regarding you question what will
> > happen in case operation fails in case of cloning snapshot i have never
> > experience such event if snapshot was not corrupted. In case of CopyTable
> > mr i assume that data will be partially copied. In any case your s
Hi,
I have a a few tables in hbase which I would like to create copies of. The
tables will be in same cluster.
I wanted to know based on experience, which one of the options is better:
1. copyTable2. snapshot3. Any other?
Besides efficiency aspect, I am also interested in knowing what happens
Hi,
Need some help/ inputs.
I have set hbase.client.retries.number as 40. Double checked this to make sure
it is 40 and not 400 as reported below!
However, I notice following in my logs:
2015-11-19 16:35:02,687 WARN [htable-pool5-t1] client.AsyncProcess: #3,
table=ldmns:indx_parameterstore,
.compute.internal,40359,1447816123180, tracking
started Tue Nov 17 22:26:27 PST 2015, retrying after 10046 ms, replay 2 ops.
Thanks,Sumit
From: Ted Yu <yuzhih...@gmail.com>
To: Sumit Nigam <sumit_o...@yahoo.com>
Cc: "user@hbase.apache.org" <user@hbase.apache.org>
be related to Hbase code? And any advise
on if I can somehow avoid it in first place?
Thanks,Sumit
From: Ted Yu <yuzhih...@gmail.com>
To: Sumit Nigam <sumit_o...@yahoo.com>
Cc: "user@hbase.apache.org" <user@hbase.apache.org>
Sent: Sunday, November 15, 2015
)
From: Ted Yu <yuzhih...@gmail.com>
To: "user@hbase.apache.org" <user@hbase.apache.org>; Sumit Nigam
<sumit_o...@yahoo.com>
Sent: Sunday, November 15, 2015 10:50 AM
Subject: Re: About exceptions
bq. TableNotEnabledExceptionTableNotFoundExceptionIOExcepti
Hi,
There are some exceptions which I face intermittently with Hbase and I thought
some help from experts online can really help me. These are:
TableNotEnabledExceptionTableNotFoundExceptionIOException -
TableNamespaceManager isn't ready to serve
One of the reasons I can see for this seems to
Hi,
I have a few questions/ observations with respect to some of the Hbase
exceptions.
I have used various hbck options with varied success in case of Hbase master
failing to startup after a shutdown. However, it has been more of trial and
error. Is there any recommendation document as to what
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