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| author | Michael Armbrust <michael@databricks.com> | 2016-02-22 15:27:29 -0800 |
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| committer | Michael Armbrust <michael@databricks.com> | 2016-02-22 15:27:29 -0800 |
| commit | 173aa949c309ff7a7a03e9d762b9108542219a95 (patch) | |
| tree | 8dc2978ccaa7c4011aeaeb5c358a49f055a44ef6 /README.md | |
| parent | 4a91806a45a48432c3ea4c2aaa553177952673e9 (diff) | |
| download | spark-173aa949c309ff7a7a03e9d762b9108542219a95.tar.gz spark-173aa949c309ff7a7a03e9d762b9108542219a95.tar.bz2 spark-173aa949c309ff7a7a03e9d762b9108542219a95.zip | |
[SPARK-12546][SQL] Change default number of open parquet files
A common problem that users encounter with Spark 1.6.0 is that writing to a partitioned parquet table OOMs. The root cause is that parquet allocates a significant amount of memory that is not accounted for by our own mechanisms. As a workaround, we can ensure that only a single file is open per task unless the user explicitly asks for more.
Author: Michael Armbrust <michael@databricks.com>
Closes #11308 from marmbrus/parquetWriteOOM.
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