[jira] [Updated] (SPARK-26921) Fix CRAN hack as soon as Arrow is available on CRAN

[ https://issues.apache.org/jira/browse/SPARK-26921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Hyukjin Kwon updated SPARK-26921: - Description: We should update SparkR guide documentation, and some related documents, comments

[jira] [Updated] (SPARK-26921) Fix CRAN hack as soon as Arrow is available on CRAN

[ https://issues.apache.org/jira/browse/SPARK-26921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Hyukjin Kwon updated SPARK-26921: - Description: Arrow optimization was added but Arrow is not available on CRAN. So, it had to add