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Posted to dev@zookeeper.apache.org by "Avery Ching (JIRA)" <ji...@apache.org> on 2009/12/09 23:33:18 UTC
[jira] Created: (ZOOKEEPER-616) Provide a function to parse out the
name and the sequence number from a zknode path
Provide a function to parse out the name and the sequence number from a zknode path
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Key: ZOOKEEPER-616
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-616
Project: Zookeeper
Issue Type: New Feature
Components: c client, java client
Affects Versions: 3.2.1, 3.2.0, 3.1.1, 3.1.0, 3.0.1, 3.0.0
Reporter: Avery Ching
Priority: Minor
Given a zookeeper path and knowing it was created with the SEQUENCE flag, it would be nice to be able to get the sequence number and the name. Currently, it is not documented how many bytes the sequence number uses in the path (Mahadev told me 10 for 3.1.1 for example), and having a function to retrieve this data would hide the actual number of bytes used and provide the useful functionality for users.
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[jira] Updated: (ZOOKEEPER-616) Provide a function to parse out the
name and the sequence number from a zknode path
Posted by "Patrick Hunt (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/ZOOKEEPER-616?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Patrick Hunt updated ZOOKEEPER-616:
-----------------------------------
Fix Version/s: (was: 3.3.0)
3.4.0
> Provide a function to parse out the name and the sequence number from a zknode path
> -----------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-616
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-616
> Project: Zookeeper
> Issue Type: New Feature
> Components: c client, java client
> Affects Versions: 3.0.0, 3.0.1, 3.1.0, 3.1.1, 3.2.0, 3.2.1
> Reporter: Avery Ching
> Priority: Minor
> Fix For: 3.4.0
>
>
> Given a zookeeper path and knowing it was created with the SEQUENCE flag, it would be nice to be able to get the sequence number and the name. Currently, it is not documented how many bytes the sequence number uses in the path (Mahadev told me 10 for 3.1.1 for example), and having a function to retrieve this data would hide the actual number of bytes used and provide the useful functionality for users.
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[jira] Commented: (ZOOKEEPER-616) Provide a function to parse out
the name and the sequence number from a zknode path
Posted by "Mahadev konar (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/ZOOKEEPER-616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12789479#action_12789479 ]
Mahadev konar commented on ZOOKEEPER-616:
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Its more appropriate to put it in a zookeeperutils class. We should have one anyway for both c and java.
> Provide a function to parse out the name and the sequence number from a zknode path
> -----------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-616
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-616
> Project: Zookeeper
> Issue Type: New Feature
> Components: c client, java client
> Affects Versions: 3.0.0, 3.0.1, 3.1.0, 3.1.1, 3.2.0, 3.2.1
> Reporter: Avery Ching
> Priority: Minor
> Fix For: 3.3.0
>
>
> Given a zookeeper path and knowing it was created with the SEQUENCE flag, it would be nice to be able to get the sequence number and the name. Currently, it is not documented how many bytes the sequence number uses in the path (Mahadev told me 10 for 3.1.1 for example), and having a function to retrieve this data would hide the actual number of bytes used and provide the useful functionality for users.
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[jira] Updated: (ZOOKEEPER-616) Provide a function to parse out the
name and the sequence number from a zknode path
Posted by "Mahadev konar (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/ZOOKEEPER-616?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mahadev konar updated ZOOKEEPER-616:
------------------------------------
Fix Version/s: 3.3.0
> Provide a function to parse out the name and the sequence number from a zknode path
> -----------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-616
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-616
> Project: Zookeeper
> Issue Type: New Feature
> Components: c client, java client
> Affects Versions: 3.0.0, 3.0.1, 3.1.0, 3.1.1, 3.2.0, 3.2.1
> Reporter: Avery Ching
> Priority: Minor
> Fix For: 3.3.0
>
>
> Given a zookeeper path and knowing it was created with the SEQUENCE flag, it would be nice to be able to get the sequence number and the name. Currently, it is not documented how many bytes the sequence number uses in the path (Mahadev told me 10 for 3.1.1 for example), and having a function to retrieve this data would hide the actual number of bytes used and provide the useful functionality for users.
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[jira] Commented: (ZOOKEEPER-616) Provide a function to parse out
the name and the sequence number from a zknode path
Posted by "Patrick Hunt (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/ZOOKEEPER-616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12789475#action_12789475 ]
Patrick Hunt commented on ZOOKEEPER-616:
----------------------------------------
Actually this is very well documented in the current release docs:
http://hadoop.apache.org/zookeeper/docs/current/zookeeperProgrammers.html#Sequence+Nodes+--+Unique+Naming
"When creating a znode you can also request that ZooKeeper append a monotonicly increasing counter to the end of path. This counter is unique to the parent znode. The counter has a format of %010d -- that is 10 digits with 0 (zero) padding (the counter is formatted in this way to simplify sorting), i.e. "<path>0000000001"."
However this does sound like a reasonable request to me. Where should we put it though? Stick it into ZooKeeper class, or in
some new ZooKeeperUtils class? (both don't seem optimal) As we don't have a "ZNode" class on the client (Stat is probably
the closest) there's no obvious place to put it afaict.
> Provide a function to parse out the name and the sequence number from a zknode path
> -----------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-616
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-616
> Project: Zookeeper
> Issue Type: New Feature
> Components: c client, java client
> Affects Versions: 3.0.0, 3.0.1, 3.1.0, 3.1.1, 3.2.0, 3.2.1
> Reporter: Avery Ching
> Priority: Minor
> Fix For: 3.3.0
>
>
> Given a zookeeper path and knowing it was created with the SEQUENCE flag, it would be nice to be able to get the sequence number and the name. Currently, it is not documented how many bytes the sequence number uses in the path (Mahadev told me 10 for 3.1.1 for example), and having a function to retrieve this data would hide the actual number of bytes used and provide the useful functionality for users.
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