[ https://issues.apache.org/jira/browse/HADOOP-17770?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Anoop Sam John updated HADOOP-17770: ------------------------------------ Attachment: Throughput_0 cache hit.png > WASB : Support disabling buffered reads in positional reads > ----------------------------------------------------------- > > Key: HADOOP-17770 > URL: https://issues.apache.org/jira/browse/HADOOP-17770 > Project: Hadoop Common > Issue Type: Improvement > Reporter: Anoop Sam John > Assignee: Anoop Sam John > Priority: Major > Labels: pull-request-available > Fix For: 3.4.0 > > Attachments: Throughput_0 cache hit.png > > Time Spent: 0.5h > Remaining Estimate: 0h > > This is just like HADOOP-17038 > Right now it will do a seek to the position , read and then seek back to the > old position. (As per the impl in the super class) > In HBase kind of workloads we rely mostly on short preads. (like 64 KB size > by default). So would be ideal to support a pure pos read API which will not > even keep the data in a buffer but will only read the required data as what > is asked for by the caller. (Not reading ahead more data as per the read size > config) > Allow an optional boolean config to be specified while opening file for read > using which buffered pread can be disabled. > FutureDataInputStreamBuilder openFile(Path path) -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org