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Hi,
I have 0.92-security installed. I'm hitting intermittent problems starting
the regionservers because of intermittent zookeeper connection failures.
Because of this not all my region servers startup after "start
regionservers". This also som
Hi, everyone,
I often get an NPE during the YCSB load process if timeseries is set and I'm
loading lots of records. Here's the syntax I'm using:
YCSB Client 0.1
Command line: -load -db com.yahoo.ycsb.db.HBaseClient -P workloads/workloada
-p columnfamily=family -p recordcount=1000 -th
Actually, I had pre-created too many regions so most were only half full, I had
a couple of regions that were 4gb.
On Feb 17, 2012, at 3:48 PM, Bryan Keller wrote:
> Is the max region file size the size of the data uncompressed or the max size
> of the store file? I noticed my store files are ~
Is the max region file size the size of the data uncompressed or the max size
of the store file? I noticed my store files are ~2.1 gb though I have the max
region size set to 4 gb. This is after a major compaction. Also, is the max
region size 4 gb in HBase 0.90.4 or can it be larger? The docs s
On Fri, Feb 17, 2012 at 2:38 PM, Jeff Whiting wrote:
> Is there way to profile a specific get request to see where the time is
> spent (e.g. checking memstore, reading from hdfs, etc)?
>
> We are running into a problem where a get after a delete goes really slow.
> We have a row that has between
Is there way to profile a specific get request to see where the time is spent (e.g. checking
memstore, reading from hdfs, etc)?
We are running into a problem where a get after a delete goes really slow. We have a row that has
between 100 to 256 MB of data in it across a couple hundred columns.
The gist of the answer is that, unlike random reads, the blocks we
read sequentially from the fs are wholly consumed so you end up doing
less fs calls thus the total proportion of the time spent talking to
datanodes is lessened (which is what local reads help).
Also the dfs client keeps a block re
I was thinking (wrongly it seems) that having the region server read directly
from the local file system would be faster than going through the data node,
even with sequential access.
On Feb 17, 2012, at 1:28 PM, Jean-Daniel Cryans wrote:
> On Fri, Feb 17, 2012 at 1:21 PM, Bryan Keller wrote:
On Fri, Feb 17, 2012 at 1:21 PM, Bryan Keller wrote:
> I have been experimenting with local reads. For me, enabling did not help
> improve read performance at all, I get the same performance either way. I can
> see in the data node logs it is passing back the local path, so it is enabled
> prop
I have been experimenting with local reads. For me, enabling did not help
improve read performance at all, I get the same performance either way. I can
see in the data node logs it is passing back the local path, so it is enabled
properly.
Perhaps the benefits of local reads are dependent on th
Filters support re-seek functionality. Hint can be given on the point
of re-seek. Re-seek can be applied to either columns or rows
(basically, hint is the new target of re-seek as key-value). You can
find details in the hbase book (and perhaps somewhere online, too).
-d
On Mon, Feb 13, 2012 at 5:
Yes, I noticed that. But it missed something I mentioned in my previous
email.
Thanks,
Bing
On Sat, Feb 18, 2012 at 12:11 AM, Stack wrote:
> The next page is on pseudo-distributed:
> http://hbase.apache.org/book/standalone_dist.html#distributed
>
> St.Ack
>
> On Fri, Feb 17, 2012 at 7:18 AM, Bi
Stack,
The link just describes a standalone mode for HBase. If possible, I think a
pseudo-distributed mode is also preferred.
Thanks,
Bing
On Fri, Feb 17, 2012 at 11:10 PM, Stack wrote:
> On Thu, Feb 16, 2012 at 11:03 PM, Bing Li wrote:
> > I just made summary about the experiences to set up
On Thu, Feb 16, 2012 at 11:03 PM, Bing Li wrote:
> I just made summary about the experiences to set up a pseudo-distributed
> mode HBase.
>
Thank you for the writeup. What would you have us change in here:
http://hbase.apache.org/book/quickstart.html?
Thanks,
St.Ack
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