18 May 2012 18:05
Re: Re: Fast navigation in binary gzip'ed file that includes messages of variable length
Igor Gatis <igorgatis <at> gmail.com>
2012-05-18 16:05:38 GMT
2012-05-18 16:05:38 GMT
Is a separate index file an option? You could build main file and this index file. If one file only is desirable, you can prepend or append index later.
On Thu, May 17, 2012 at 8:22 AM, Roman Vinogradov <vinogradov.roman <at> gmail.com> wrote:
Thank you all.
I think TFile is very similar to what I am trying to do.
One issue of TFile is that it stores all meta and indices in its tail
which in turn means that if the writing process suddenly crashes for
some reason (e.g. hardware issue or something not related to our
process) then file will be of incomplete format and it won't be
possible to read it or even recover it.
/Roman
On 17 май, 10:28, Eyal Farago <eyal.far... <at> gmail.com> wrote:
> you can use an approach like HADDOP's TFilehttps://issues.apache.org/jira/secure/attachment/12396286/TFile%20Spe...>> - Скрыть цитируемый текст -
> basically they store compressed chunks in a file, and at the end of the
> file (hence T(ail)File) they store come kind of a sparse index to
> the chunks.
>
> Eyal.
>
>
>
>
> - Показать цитируемый текст -
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