You are viewing a plain text version of this content. The canonical link for it is here.
Posted to user@cassandra.apache.org by "raoyixuan (Shandy)" <ra...@huawei.com> on 2011/01/24 04:30:40 UTC
about the partitioner type
whether the random/order partitioner specify the token for the node ,not for key?
华为技术有限公司 Huawei Technologies Co., Ltd.[Company_logo]
Phone: 28358610
Mobile: 13425182943
Email: raoyixuan@huawei.com<ma...@huawei.com>
地址：深圳市龙岗区坂田华为基地 邮编：518129
Huawei Technologies Co., Ltd.
Bantian, Longgang District,Shenzhen 518129, P.R.China
http://www.huawei.com
________________________________
本邮件及其附件含有华为公司的保密信息，仅限于发送给上面地址中列出的个人或群组。禁
止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制、或散发）本邮件中
的信息。如果您错收了本邮件，请您立即电话或邮件通知发件人并删除本邮件！
This e-mail and its attachments contain confidential information from HUAWEI, which
is intended only for the person or entity whose address is listed above. Any use of the
information contained herein in any way (including, but not limited to, total or partial
disclosure, reproduction, or dissemination) by persons other than the intended
recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by
phone or email immediately and delete it!
Re: about the partitioner type
Posted by aaron morton <aa...@thelastpickle.com>.
The OrderPreservingPartitioner will treat the key byte array as a UTF8 string. Specifically it uses the nio Charset decoder http://download.oracle.com/javase/1.4.2/docs/api/java/nio/charset/Charset.html to turn the byte array into a string.
The ByteOrderedPartitioner will treat the key as a simple byte array.
Aaron
On 24/01/2011, at 5:10 PM, raoyixuan (Shandy) wrote:
> How to compare the key itself (as a byte array) to the tokens in the ring in OrderPreservingPartitioner? As in know, the node which value is larger than key value will handle the key in random partitioner
>
> From: Tyler Hobbs [mailto:tyler@riptano.com]
> Sent: Monday, January 24, 2011 11:43 AM
> To: user@cassandra.apache.org
> Subject: Re: about the partitioner type
>
> http://www.datastax.com/docs/0.7/operations/clustering#tokens-partitioners-and-the-ring
>
> - Tyler
>
> 2011/1/23 raoyixuan (Shandy) <ra...@huawei.com>
> whether the random/order partitioner specify the token for the node ,not for key?
>
> 华为技术有限公司 Huawei Technologies Co., Ltd.
>
>
>
>
> Phone: 28358610
> Mobile: 13425182943
> Email: raoyixuan@huawei.com
> 地址：深圳市龙岗区坂田华为基地 邮编：518129
> Huawei Technologies Co., Ltd.
> Bantian, Longgang District,Shenzhen 518129, P.R.China
> http://www.huawei.com
> 本邮件及其附件含有华为公司的保密信息，仅限于发送给上面地址中列出的个人或群组。禁
> 止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制、或散发）本邮件中
> 的信息。如果您错收了本邮件，请您立即电话或邮件通知发件人并删除本邮件！
> This e-mail and its attachments contain confidential information from HUAWEI, which
> is intended only for the person or entity whose address is listed above. Any use of the
> information contained herein in any way (including, but not limited to, total or partial
> disclosure, reproduction, or dissemination) by persons other than the intended
> recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by
> phone or email immediately and delete it!
>
>
RE: about the partitioner type
Posted by "raoyixuan (Shandy)" <ra...@huawei.com>.
How to compare the key itself (as a byte array) to the tokens in the ring in OrderPreservingPartitioner? As in know, the node which value is larger than key value will handle the key in random partitioner
From: Tyler Hobbs [mailto:tyler@riptano.com]
Sent: Monday, January 24, 2011 11:43 AM
To: user@cassandra.apache.org
Subject: Re: about the partitioner type
http://www.datastax.com/docs/0.7/operations/clustering#tokens-partitioners-and-the-ring
- Tyler
2011/1/23 raoyixuan (Shandy) <ra...@huawei.com>>
whether the random/order partitioner specify the token for the node ,not for key?
华为技术有限公司 Huawei Technologies Co., Ltd.[Company_logo]
Phone: 28358610
Mobile: 13425182943
Email: raoyixuan@huawei.com<ma...@huawei.com>
地址：深圳市龙岗区坂田华为基地 邮编：518129
Huawei Technologies Co., Ltd.
Bantian, Longgang District,Shenzhen 518129, P.R.China
http://www.huawei.com
________________________________
本邮件及其附件含有华为公司的保密信息，仅限于发送给上面地址中列出的个人或群组。禁
止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制、或散发）本邮件中
的信息。如果您错收了本邮件，请您立即电话或邮件通知发件人并删除本邮件！
This e-mail and its attachments contain confidential information from HUAWEI, which
is intended only for the person or entity whose address is listed above. Any use of the
information contained herein in any way (including, but not limited to, total or partial
disclosure, reproduction, or dissemination) by persons other than the intended
recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by
phone or email immediately and delete it!
Re: about the partitioner type
Posted by Tyler Hobbs <ty...@riptano.com>.
http://www.datastax.com/docs/0.7/operations/clustering#tokens-partitioners-and-the-ring
- Tyler
2011/1/23 raoyixuan (Shandy) <ra...@huawei.com>
> whether the random/order partitioner specify the token for the node
> ,not for key?
>
>
>
> 华为技术有限公司 Huawei Technologies Co., Ltd.[image: Company_logo]
>
>
>
>
>
>
>
> Phone: 28358610
> Mobile: 13425182943
> Email: raoyixuan@huawei.com
> 地址：深圳市龙岗区坂田华为基地 邮编：518129
> Huawei Technologies Co., Ltd.
> Bantian, Longgang District,Shenzhen 518129, P.R.China
> http://www.huawei.com
> ------------------------------
>
> 本邮件及其附件含有华为公司的保密信息，仅限于发送给上面地址中列出的个人或群组。禁
> 止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制、或散发）本邮件中
> 的信息。如果您错收了本邮件，请您立即电话或邮件通知发件人并删除本邮件！
> This e-mail and its attachments contain confidential information from
> HUAWEI, which
> is intended only for the person or entity whose address is listed above.
> Any use of the
> information contained herein in any way (including, but not limited to,
> total or partial
> disclosure, reproduction, or dissemination) by persons other than the
> intended
> recipient(s) is prohibited. If you receive this e-mail in error, please
> notify the sender by
> phone or email immediately and delete it!
>
>
>