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ASF GitHub Bot commented on CASSANDRA-14556: -------------------------------------------- Github user dineshjoshi commented on a diff in the pull request: https://github.com/apache/cassandra/pull/239#discussion_r202492216 --- Diff: conf/cassandra.yaml --- @@ -784,6 +784,15 @@ compaction_throughput_mb_per_sec: 16 # between the sstables, reducing page cache churn and keeping hot rows hot sstable_preemptive_open_interval_in_mb: 50 +# When enabled, permits Cassandra to zero copy eligible SSTables between --- End diff -- Updated. > Optimize streaming path in Cassandra > ------------------------------------ > > Key: CASSANDRA-14556 > URL: https://issues.apache.org/jira/browse/CASSANDRA-14556 > Project: Cassandra > Issue Type: Improvement > Components: Streaming and Messaging > Reporter: Dinesh Joshi > Assignee: Dinesh Joshi > Priority: Major > Labels: Performance > Fix For: 4.x > > > During streaming, Cassandra reifies the sstables into objects. This creates > unnecessary garbage and slows down the whole streaming process as some > sstables can be transferred as a whole file rather than individual > partitions. The objective of the ticket is to detect when a whole sstable can > be transferred and skip the object reification. We can also use a zero-copy > path to avoid bringing data into user-space on both sending and receiving > side. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org