Re: Default Bloom Filters for HTables

[Shrikant Bang]

 Thank you Yichen, for response. Its a very informative!

Regards,
Shrikant Bang.

On Mon, Oct 29, 2018 at 12:23 PM Yichen Zhou 
wrote:

> Hi Shrikant,
>
>
> Kylin use FuzzyRowFilter instead of Bloom Filter. FuzzyRowFilter can find
> the row key which matches the specific pattern and skip scanning the
> records. It is more suitable than bloom filter for kylin in most cases.
>
>
> https://sematext.com/blog/consider-using-fuzzyrowfilter-when-in-need-for-secondary-indexes-in-hbase/
>  Hope this can help.
>
>
> Regards,
>
> Yichen
>
>
>
>
> <https://sematext.com/blog/consider-using-fuzzyrowfilter-when-in-need-for-secondary-indexes-in-hbase/>
> HBase FuzzyRowFilter: Alternative to Secondary Indexes ...
> <https://sematext.com/blog/consider-using-fuzzyrowfilter-when-in-need-for-secondary-indexes-in-hbase/>
> sematext.com
> In this post we’ll explain the usage of FuzzyRowFilter which can help in
> many situations where secondary indexes solutions seems to be the only
> choice to avoid full table scans. Background When it comes to HBase the way
> you design […]
>
>
> --
> *发件人:* Shrikant Bang 
> *发送时间:* 2018年10月25日 17:05:44
> *收件人:* dev@kylin.apache.org; u...@kylin.apache.org
> *主题:* Default Bloom Filters for HTables
>
> Hi Team,
>
>   With my understanding, in Kylin v2.5.x bloom filters are disabled
> <https://github.com/apache/kylin/blob/2.5.x/storage-hbase/src/main/java/org/apache/kylin/storage/hbase/steps/CubeHTableUtil.java#L204>
>  by
> default for HTables. I am curious to know if there is any specific reason
> using BloomType.NONE?
>
> Please correct me if I am wrong.
>
> Thank You,
> Shrikant Bang
>
>

答复: Default Bloom Filters for HTables

[Yichen Zhou]

Hi Shrikant,


Kylin use FuzzyRowFilter instead of Bloom Filter. FuzzyRowFilter can find the 
row key which matches the specific pattern and skip scanning the records. It is 
more suitable than bloom filter for kylin in most cases.

https://sematext.com/blog/consider-using-fuzzyrowfilter-when-in-need-for-secondary-indexes-in-hbase/
 Hope this can help.


Regards,

Yichen



[https://sematext.com/wp-content/uploads/2018/10/sematext-featured-image.png]<https://sematext.com/blog/consider-using-fuzzyrowfilter-when-in-need-for-secondary-indexes-in-hbase/>

HBase FuzzyRowFilter: Alternative to Secondary Indexes 
...<https://sematext.com/blog/consider-using-fuzzyrowfilter-when-in-need-for-secondary-indexes-in-hbase/>
sematext.com
In this post we’ll explain the usage of FuzzyRowFilter which can help in many 
situations where secondary indexes solutions seems to be the only choice to 
avoid full table scans. Background When it comes to HBase the way you design […]





发件人: Shrikant Bang 
发送时间: 2018年10月25日 17:05:44
收件人: dev@kylin.apache.org; u...@kylin.apache.org
主题: Default Bloom Filters for HTables

Hi Team,

  With my understanding, in Kylin v2.5.x bloom filters are 
disabled<https://github.com/apache/kylin/blob/2.5.x/storage-hbase/src/main/java/org/apache/kylin/storage/hbase/steps/CubeHTableUtil.java#L204>
 by default for HTables. I am curious to know if there is any specific reason 
using BloomType.NONE?

Please correct me if I am wrong.

Thank You,
Shrikant Bang

Default Bloom Filters for HTables

[Shrikant Bang]

Hi Team,

  With my understanding, in Kylin v2.5.x bloom filters are disabled

by
default for HTables. I am curious to know if there is any specific reason
using BloomType.NONE?

Please correct me if I am wrong.

Thank You,
Shrikant Bang