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https://issues.apache.org/jira/browse/PARQUET-1056?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney updated PARQUET-1056:
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Summary: [C++] Add function to snapshot FileMetaData to a separate file, in
case writing a row group fails, then prior row groups can be recovered (was:
Partial Reading when process crash)
> [C++] Add function to snapshot FileMetaData to a separate file, in case
> writing a row group fails, then prior row groups can be recovered
> ------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: PARQUET-1056
> URL: https://issues.apache.org/jira/browse/PARQUET-1056
> Project: Parquet
> Issue Type: Wish
> Components: parquet-cpp
> Affects Versions: cpp-1.1.0
> Reporter: yugu
> Priority: Major
>
> questions are actually twofold:
> 1. is there a way to write data column by column ?
> I see a columnwriter but seems that's for arrow..
> 2. was wondering if there is a way to preserve the footer information once in
> a while, in case the process crashes. for now if the proc crash the parquet
> file become unreadable...
> In the code the close function (for parquetfilewriter) basically just flushes
> and close the stream. maybe a separate api for flush footer to target file?
> (or maybe there is an existing way for making things robust I missed)
> thanks!
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