Hi all,
We use thrift to access HBase, and I've been playing around with endpoint
coprocessors. I'm wondering how I can use thrift to access these - it seems
like they're mostly supported with Java clients.
So far, I've just been adding each function to the thrift schema and then
manually edit
Hello all,
I accidentally created a table using LZO compression, and I don't have
everything set up for LZO. So I tried to alter the table, but the shell gave me
an error that the table was disabled. Tried to enable, and it said the table
was enabled. Couldn't drop the table because it thinks t
I fixed this of course right after sending to the mailing list. I had to delete
the node from zookeeper and restart HBase.
- Original Message -
From: Ben West
To: "user@hbase.apache.org"
Cc:
Sent: Monday, March 26, 2012 4:40 PM
Subject: Table that won't delete
Hey Balaji,
If you dislike HBase's default region assignments, you can use the "move"
command in shell to change where they're hosted.
-Ben
- Original Message -
From: Balaji k
To: user@hbase.apache.org
Cc:
Sent: Monday, April 2, 2012 11:49 PM
Subject: Regionserver assignment
Hi,
Hey All,
I'm following the quickstart guide (http://hbase.apache.org/quickstart.html). I
downloaded the tar, unzipped and started just fine. But when I try to move on
to the next step, I get:
~/S/h/h/bin> ./hbase shell
HBase Shell; enter 'help' for list of supported commands.
Type "exit" to lea
Hey all,
I'm trying to use the REST API and I have a couple questions:
1. If I save a value with a timestamp of t, it seems like I have to query for
values of t+1 (or +2 etc.). So does the timestamp portion of the API mean "find
the most recent value written before this timestamp"? (As opposed
ure that your machine DNS
resolve the
host properly. -Stuti -Original Message-----
From: Ben West [mailto:bwsithspaw...@yahoo.com]
Sent: Monday, September 19, 2011 3:27 AM
To: user@hbase.apache.org
Subject: NotAllMetaRegionsOnlineException Hey All, I'm following the quickstart
guide (http:
Hey all,
I'm running the standalone HBase server (0.90.4) and REST client (version
0.0.2). When I POST data and then GET it back, the data is changed;
particularly the spaces seem to be removed. Does anyone know what's going on?
Here is a python script replicating my problem; I have a table nam
having
trouble with this.)
-Ben
- Original Message -
From: Andrew Purtell
To: "user@hbase.apache.org" ; Ben West
Cc:
Sent: Monday, October 3, 2011 6:50 PM
Subject: Re: Spaces disappear in HBase?
Keys and values need to be base64 encoded in all non-binary representations,
Hey All,
I'm having an issue I can't debug. The shell gives me a
MasterNotRunningException, but I can connect to the master via the web
interface. I'm using the Cloudera demo VM, which has a standalone instance of
HBase.
I'm attaching the HBase-master log file. The only thing I can see is a wa
Hi all,
We're storing timestamped data in HBase; from lurking on the mailing list it
seems like the recommendation is usually to make the timestamp part of the row
key. I'm curious why this is - is scanning over rows more efficient than
scanning over timestamps within a cell?
The book says: "
Thanks Stack. We are indeed using locks outside of HBase, but I hadn't heard
about the problems with HBase's locks. Good to know.
-Ben
- Original Message -
From: Stack
To: user@hbase.apache.org; Ben West
Cc:
Sent: Wednesday, October 19, 2011 5:24 PM
Subject: Re: Custom
Message -
From: Ben West
To: "user@hbase.apache.org"
Cc:
Sent: Thursday, October 20, 2011 9:13 AM
Subject: Re: Custom timestamps
Thanks Stack. We are indeed using locks outside of HBase, but I hadn't heard
about the problems with HBase's locks. Good to know.
-Ben
--
iel Cryans
To: user@hbase.apache.org; Ben West
Cc:
Sent: Tuesday, October 18, 2011 1:23 PM
Subject: Re: HMaster issues
This line:
java.lang.NoSuchMethodException:
org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker.getFileLength()
Is because it's using the local filesystem and no
Hey all,
I'm getting this error:
$ hadoop jar /usr/lib/hbase/hbase-0.90.3-cdh3u1.jar importtsv -libjars
/usr/lib/hbase/lib/guava-r06.jar
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/zookeeper/KeeperException
...
I found a few threads [1,2] which seem to be the same th
This worked, thanks!
- Original Message -
From: Ravikumar MAV
To: user@hbase.apache.org; Ben West
Cc:
Sent: Monday, October 24, 2011 2:51 PM
Subject: Re: Importtsv error
You can try
export HADOOP_CLASSPATH=$HADOOP_CLASSPATH:`hbase classpath`
in your shell
On Mon, Oct 24, 2011 at
Hey all,
We have a cluster with four region servers and about 2,000 regions. We're using
the REST server, and we've noticed that whatever region is hosting META gets
3-5x the number of requests that the other regions do.
It's my understanding that the client should cache the row start/end loca
Thanks Stack.
Is there any way I can log requests going to .META. vs. region servers? I've
tried setting various portions of HBase to DEBUG but I haven't found the magic
combo yet.
- Original Message -
From: Stack
To: user@hbase.apache.org; Ben West
Cc:
Sent: Thursday,
is sound plausible? I can submit a JIRA asking for maxSize to be a
config param if so. We have >> 10 simultaneous requests.
- Original Message -----
From: Ben West
To: Stack ; "user@hbase.apache.org"
Cc:
Sent: Friday, December 9, 2011 10:52 AM
Subject: Re: Meta region hotspo
ect: Re: Meta region hotspotting
Can u try w/o a limit or with upped limit and see if a diff? Sounds
plausible yes but looks like u could make a fact with some small experiments
Thanks
On Dec 15, 2011, at 12:25 PM, Ben West wrote:
> Digging into this further, I see the following in HT
Hi all
We're trying out .92rc3 instead of .90.4, and for the most part everything
seems fine. But we have a simple test of REST performance which is basically a
large number of cURL jobs getting random rows, and this test is running *a lot*
slower under .92.
When we run just a single client do
server since thrift and native
> clients stayed the same.
>
> Can you provide us your test so we can do testing on our side too?
>
> Maybe doing a few jstacks on the REST server could point out the
> obvious bottlenecks.
>
> J-D
>
> On Tue, Jan 17, 2012 at 1
your help everyone,
-Ben
- Original Message -
From: Jack Levin
To: user@hbase.apache.org
Cc: Ben West
Sent: Monday, December 26, 2011 7:32 PM
Subject: Re: Meta region hotspotting
Some time ago, we had a situation where our REST server was slammed
with queries that did not find any matches for
There are lots of free, large data sets:
* http://www.readwriteweb.com/archives/where_to_find_open_data_on_the.php
* http://www.quora.com/Data/Where-can-I-get-large-datasets-open-to-the-public
Just find one that interests you. There probably aren't many fields in which
people didn't wish there w
You can try turning on verbose garbage collection logs and see if the slow
times correspond to a GC pause. Cloudera has a series of blog posts regarding
GC pauses in HBase and how to avoid
them: http://www.cloudera.com/blog/2011/02/avoiding-full-gcs-in-hbase-with-memstore-local-allocation-buffer
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