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https://issues.apache.org/jira/browse/SPARK-23404?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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liuxian updated SPARK-23404:
Summary: When the underlying buffers are already direct, we should copy
them to the heap memory (was: When
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https://issues.apache.org/jira/browse/SPARK-23404?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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liuxian updated SPARK-23404:
Description: If the memory mode is _ON_HEAP_,when the underlying buffers
are direct, we should copy them to