It should be newest version of each value.
Cheers
On Thu, Apr 10, 2014 at 9:55 AM, gortiz <gor...@pragsis.com> wrote:
> Another little question is, when the filter I'm using, Do I check all the
> versions? or just the newest? Because, I'm wondering if when I do a scan
> over all the table, I look for the value "5" in all the dataset or I'm just
> looking for in one newest version of each value.
>
>
> On 10/04/14 16:52, gortiz wrote:
>
>> I was trying to check the behaviour of HBase. The cluster is a group of
>> old computers, one master, five slaves, each one with 2Gb, so, 12gb in
>> total.
>> The table has a column family with 1000 columns and each column with 100
>> versions.
>> There's another column faimily with four columns an one image of 100kb.
>> (I've tried without this column family as well.)
>> The table is partitioned manually in all the slaves, so data are balanced
>> in the cluster.
>>
>> I'm executing this sentence *scan 'table1', {FILTER => "ValueFilter(=,
>> 'binary:5')"* in HBase 0.94.6
>> My time for lease and rpc is three minutes.
>> Since, it's a full scan of the table, I have been playing with the
>> BLOCKCACHE as well (just disable and enable, not about the size of it). I
>> thought that it was going to have too much calls to the GC. I'm not sure
>> about this point.
>>
>> I know that it's not the best way to use HBase, it's just a test. I think
>> that it's not working because the hardware isn't enough, although, I would
>> like to try some kind of tunning to improve it.
>>
>>
>>
>>
>>
>>
>>
>>
>> On 10/04/14 14:21, Ted Yu wrote:
>>
>>> Can you give us a bit more information:
>>>
>>> HBase release you're running
>>> What filters are used for the scan
>>>
>>> Thanks
>>>
>>> On Apr 10, 2014, at 2:36 AM, gortiz <gor...@pragsis.com> wrote:
>>>
>>> I got this error when I execute a full scan with filters about a table.
>>>>
>>>> Caused by: java.lang.RuntimeException:
>>>> org.apache.hadoop.hbase.regionserver.LeaseException:
>>>> org.apache.hadoop.hbase.regionserver.LeaseException: lease
>>>> '-4165751462641113359' does not exist
>>>> at
>>>> org.apache.hadoop.hbase.regionserver.Leases.removeLease(Leases.java:231)
>>>>
>>>> at org.apache.hadoop.hbase.regionserver.HRegionServer.
>>>> next(HRegionServer.java:2482)
>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>> at sun.reflect.NativeMethodAccessorImpl.invoke(
>>>> NativeMethodAccessorImpl.java:39)
>>>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(
>>>> DelegatingMethodAccessorImpl.java:25)
>>>> at java.lang.reflect.Method.invoke(Method.java:597)
>>>> at org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(
>>>> WritableRpcEngine.java:320)
>>>> at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(
>>>> HBaseServer.java:1428)
>>>>
>>>> I have read about increase the lease time and rpc time, but it's not
>>>> working.. what else could I try?? The table isn't too big. I have been
>>>> checking the logs from GC, HMaster and some RegionServers and I didn't see
>>>> anything weird. I tried as well to try with a couple of caching values.
>>>>
>>>
>>
>>
>
> --
> *Guillermo Ortiz*
> /Big Data Developer/
>
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> Fax: +34 913 833 301
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