ignite-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Vyacheslav Daradur (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-5097) BinaryMarshaller should write ints in "varint" encoding where it makes sense
Date Mon, 29 May 2017 11:02:04 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-5097?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16028232#comment-16028232
] 

Vyacheslav Daradur commented on IGNITE-5097:
--------------------------------------------

[~isapego], [~ptupitsyn], [~vozerov]

Let's describe discussion result:
We can use varint encoding to following cases (in the all platforms):
1) size of all arrays 
2) BigDecimal: scale and mag
3) Strings: chars array length
4) Enum ordinals

Do you agree?

> BinaryMarshaller should write ints in "varint" encoding where it makes sense
> ----------------------------------------------------------------------------
>
>                 Key: IGNITE-5097
>                 URL: https://issues.apache.org/jira/browse/IGNITE-5097
>             Project: Ignite
>          Issue Type: Task
>          Components: general
>    Affects Versions: 2.0
>            Reporter: Vladimir Ozerov
>            Assignee: Vyacheslav Daradur
>              Labels: important, performance
>             Fix For: 2.1
>
>
> There are a lot of places in the code where we write integers for some special purposes.
Quite often their value will be vary small, so that applying "varint" format could save a
lot of space at the cost of very low additional CPU overhead. 
> Specifically:
> 1) Array/collection/map lengths
> 2) BigDecimal's (usually will save ~6 bytes)
> 3) Strings
> 4) Enum ordinals



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

Mime
View raw message