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Posted to commits@cassandra.apache.org by "Jonathan Ellis (Created) (JIRA)" <ji...@apache.org> on 2011/11/08 04:22:52 UTC
[jira] [Created] (CASSANDRA-3470) Add a second letter to Descriptor
version
Add a second letter to Descriptor version
-----------------------------------------
Key: CASSANDRA-3470
URL: https://issues.apache.org/jira/browse/CASSANDRA-3470
Project: Cassandra
Issue Type: Improvement
Components: Core
Reporter: Jonathan Ellis
Assignee: Yuki Morishita
Priority: Minor
Fix For: 1.0.3
Versions g and h are actually forwards-compatible with version f, and more changes like that are easily forseeable (e.g., CASSANDRA-3407).
It would be nice to have an extra version digit (h1, h2, ... ha, hb, ...). Otherwise our choices are forcing people to scrub for these changes (unacceptable) or not updating the Descriptor version, which is suboptimal since we don't know what the contents are until we try to read it and find the latest parts missing.
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[jira] [Updated] (CASSANDRA-3470) Add a second letter to Descriptor
version
Posted by "Yuki Morishita (Updated) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-3470?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Yuki Morishita updated CASSANDRA-3470:
--------------------------------------
Attachment: 3470.txt
Patch attached to allow extra version digit. Propose new version format is as follows.
{code}[a-z][0-9a-z]*{code}
> Add a second letter to Descriptor version
> -----------------------------------------
>
> Key: CASSANDRA-3470
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3470
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Yuki Morishita
> Priority: Minor
> Fix For: 1.0.3
>
> Attachments: 3470.txt
>
>
> Versions g and h are actually forwards-compatible with version f, and more changes like that are easily forseeable (e.g., CASSANDRA-3407).
> It would be nice to have an extra version digit (h1, h2, ... ha, hb, ...). Otherwise our choices are forcing people to scrub for these changes (unacceptable) or not updating the Descriptor version, which is suboptimal since we don't know what the contents are until we try to read it and find the latest parts missing.
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[jira] [Commented] (CASSANDRA-3470) Add a second letter to
Descriptor version
Posted by "Jonathan Ellis (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-3470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13146311#comment-13146311 ]
Jonathan Ellis commented on CASSANDRA-3470:
-------------------------------------------
Adding an extra "digit" here is hardly confusing, and pales next to the benefit of being able to add forwards-compatible improvements to sstable metadata without breaking streaming (the reason you need to scrub) between minor releases.
> Add a second letter to Descriptor version
> -----------------------------------------
>
> Key: CASSANDRA-3470
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3470
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Yuki Morishita
> Priority: Minor
> Fix For: 1.0.3
>
>
> Versions g and h are actually forwards-compatible with version f, and more changes like that are easily forseeable (e.g., CASSANDRA-3407).
> It would be nice to have an extra version digit (h1, h2, ... ha, hb, ...). Otherwise our choices are forcing people to scrub for these changes (unacceptable) or not updating the Descriptor version, which is suboptimal since we don't know what the contents are until we try to read it and find the latest parts missing.
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[jira] [Issue Comment Edited] (CASSANDRA-3470) Add a second letter
to Descriptor version
Posted by "Yuki Morishita (Issue Comment Edited) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-3470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13146976#comment-13146976 ]
Yuki Morishita edited comment on CASSANDRA-3470 at 11/9/11 12:14 PM:
---------------------------------------------------------------------
Patch attached to allow extra version digit. Propose new version format as follows.
{code}[a-z][0-9a-z]*{code}
was (Author: yukim):
Patch attached to allow extra version digit. Propose new version format is as follows.
{code}[a-z][0-9a-z]*{code}
> Add a second letter to Descriptor version
> -----------------------------------------
>
> Key: CASSANDRA-3470
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3470
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Yuki Morishita
> Priority: Minor
> Fix For: 1.0.3
>
> Attachments: 3470.txt
>
>
> Versions g and h are actually forwards-compatible with version f, and more changes like that are easily forseeable (e.g., CASSANDRA-3407).
> It would be nice to have an extra version digit (h1, h2, ... ha, hb, ...). Otherwise our choices are forcing people to scrub for these changes (unacceptable) or not updating the Descriptor version, which is suboptimal since we don't know what the contents are until we try to read it and find the latest parts missing.
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[jira] [Commented] (CASSANDRA-3470) Add a second letter to
Descriptor version
Posted by "Radim Kolar (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-3470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13146176#comment-13146176 ]
Radim Kolar commented on CASSANDRA-3470:
----------------------------------------
version number would be confusing because there is also sstable number appended. Keep it simple.
Scrub on updates is fine, its quite fast operation. Compaction is worse.
> Add a second letter to Descriptor version
> -----------------------------------------
>
> Key: CASSANDRA-3470
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3470
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Yuki Morishita
> Priority: Minor
> Fix For: 1.0.3
>
>
> Versions g and h are actually forwards-compatible with version f, and more changes like that are easily forseeable (e.g., CASSANDRA-3407).
> It would be nice to have an extra version digit (h1, h2, ... ha, hb, ...). Otherwise our choices are forcing people to scrub for these changes (unacceptable) or not updating the Descriptor version, which is suboptimal since we don't know what the contents are until we try to read it and find the latest parts missing.
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