liupengcheng created SPARK-30712:
------------------------------------
Summary: Estimate sizeInBytes from file metadata for parquet files
Key: SPARK-30712
URL: https://issues.apache.org/jira/browse/SPARK-30712
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.0.0
Reporter: liupengcheng
Currently, Spark will use a compressionFactor when calculating `sizeInBytes`
for `HadoopFsRelation`, but this is not accurate and it's hard to choose the
best `compressionFactor`. Sometimes, this can causing OOMs due to improper
BroadcastHashJoin.
So I propose to use the rowCount in the BlockMetadata to estimate the size in
memory, which can be more accurate.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
