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Posted to issues@iceberg.apache.org by GitBox <gi...@apache.org> on 2020/07/20 20:25:52 UTC
[GitHub] [iceberg] sudssf opened a new issue #1220: add option to disable compute statistics for spark2 and spark3
sudssf opened a new issue #1220:
URL: https://github.com/apache/iceberg/issues/1220
more context on thread:
https://lists.apache.org/thread.html/r477483ead7c7be7346bebcaab75b405dce67607457ac3f7cf682b999%40%3Cdev.iceberg.apache.org%3E
in spark2 , any operation such as join or union will end up scanning full table manifest ( without performing push down predicate) which can be really slow for large tables.
in spark3, predicate pushdown is performed before calling `estimateStatistics` on reader but option is still useful if size of filter is comparatively large w.r.t manifest ( table generated by stream ingestion).
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[GitHub] [iceberg] sudssf commented on issue #1220: add option to disable compute statistics for spark2 and spark3
Posted by GitBox <gi...@apache.org>.
sudssf commented on issue #1220:
URL: https://github.com/apache/iceberg/issues/1220#issuecomment-661320100
submitted PR https://github.com/apache/iceberg/pull/1221/files
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[GitHub] [iceberg] rdblue closed issue #1220: add option to disable compute statistics for spark2 and spark3
Posted by GitBox <gi...@apache.org>.
rdblue closed issue #1220:
URL: https://github.com/apache/iceberg/issues/1220
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