[ https://issues.apache.org/jira/browse/ZOOKEEPER-3311?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated ZOOKEEPER-3311: -------------------------------------- Labels: pull-request-available (was: ) > Allow a delay to the transaction log flush > ------------------------------------------- > > Key: ZOOKEEPER-3311 > URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3311 > Project: ZooKeeper > Issue Type: New Feature > Components: server > Affects Versions: 3.6.0 > Reporter: Brian Nixon > Priority: Minor > Labels: pull-request-available > > The SyncRequestProcessor flushes writes to disk either when 1000 writes are > pending to be flushed or when the processor fails to retrieve another write > from its incoming queue. The "flush when queue empty" condition operates > poorly under many workloads as it can quickly degrade into flushing after > every write -- losing all benefits of batching and leading to a continuous > stream of flushes + fsyncs which overwhelm the underlying disk. > > A configurable flush delay would ensure flushes do not happen more frequently > than once every X milliseconds. This can be used in-place of or jointly with > batch size triggered flushes. -- This message was sent by Atlassian JIRA (v7.6.3#76005)