[ https://issues.apache.org/jira/browse/SPARK-21326?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hyukjin Kwon updated SPARK-21326: --------------------------------- Description: This is related with SPARK-19918 and SPARK-18362. There are three points here: - The main advantage of this change was removing file-listing bottlenecks in driver side and I guess this does not applies to LibSVM datasource for the current state as it requires the file should be single. As a side note, it looks possible with multiple files - SPARK-21066 but it is still in discussion - Another advantage is ones from using {{FileScanRDD}}. For example, I guess we can use {{spark.sql.files.ignoreCorruptFiles}} option if we allow multiple files in schema inference. - We can unify the schema inference code path in text based data sources. This is also a preparation for SPARK-21289. was: This is related with SPARK-19918 and SPARK-18362. There are three points here: - The main advantage of this change was file-listing bottlenecks in driver side and I guess this does not applies to LibSVM datasource for the current state as it requires the file should be single. As a side note, it looks possible with multiple files - SPARK-21066 but it is still in discussion - Another advantage is ones from using {{FileScanRDD}}. For example, I guess we can use {{spark.sql.files.ignoreCorruptFiles}} option if we allow multiple files in schema inference. - We can unify the schema inference code path in text based data sources. This is also a preparation for SPARK-21289. > Use TextFileFormat in implementation of LibSVMFileFormat > -------------------------------------------------------- > > Key: SPARK-21326 > URL: https://issues.apache.org/jira/browse/SPARK-21326 > Project: Spark > Issue Type: Improvement > Components: ML, SQL > Affects Versions: 2.3.0 > Reporter: Hyukjin Kwon > > This is related with SPARK-19918 and SPARK-18362. > There are three points here: > - The main advantage of this change was removing file-listing bottlenecks in > driver side and I guess this does not applies to LibSVM datasource for the > current state as it requires the file should be single. > As a side note, it looks possible with multiple files - SPARK-21066 but it is > still in discussion > - Another advantage is ones from using {{FileScanRDD}}. For example, I guess > we can use {{spark.sql.files.ignoreCorruptFiles}} option if we allow multiple > files in schema inference. > - We can unify the schema inference code path in text based data sources. > This is also a preparation for SPARK-21289. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org