[jira] [Updated] (HADOOP-17038) Support disabling buffered reads in ABFS positional reads
[ https://issues.apache.org/jira/browse/HADOOP-17038?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Shilun Fan updated HADOOP-17038: Component/s: fs/azure Hadoop Flags: Reviewed Target Version/s: 3.3.1, 3.4.0 Affects Version/s: 3.3.1 3.4.0 > Support disabling buffered reads in ABFS positional reads > - > > Key: HADOOP-17038 > URL: https://issues.apache.org/jira/browse/HADOOP-17038 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/azure >Affects Versions: 3.3.1, 3.4.0 >Reporter: Anoop Sam John >Assignee: Anoop Sam John >Priority: Major > Labels: HBase, abfsactive, pull-request-available > Fix For: 3.3.1, 3.4.0 > > Attachments: HBase Perf Test Report.xlsx, screenshot-1.png > > Time Spent: 9h 10m > Remaining Estimate: 0h > > 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 (v8.20.10#820010) - To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
[jira] [Updated] (HADOOP-17038) Support disabling buffered reads in ABFS positional reads
[ https://issues.apache.org/jira/browse/HADOOP-17038?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Steve Loughran updated HADOOP-17038: Fix Version/s: 3.3.1 > Support disabling buffered reads in ABFS positional reads > - > > Key: HADOOP-17038 > URL: https://issues.apache.org/jira/browse/HADOOP-17038 > Project: Hadoop Common > Issue Type: Sub-task >Reporter: Anoop Sam John >Assignee: Anoop Sam John >Priority: Major > Labels: HBase, abfsactive, pull-request-available > Fix For: 3.3.1, 3.4.0 > > Attachments: HBase Perf Test Report.xlsx, screenshot-1.png > > Time Spent: 9h 10m > Remaining Estimate: 0h > > 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
[jira] [Updated] (HADOOP-17038) Support disabling buffered reads in ABFS positional reads
[ https://issues.apache.org/jira/browse/HADOOP-17038?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Anoop Sam John updated HADOOP-17038: Description: 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) was: 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) > Support disabling buffered reads in ABFS positional reads > - > > Key: HADOOP-17038 > URL: https://issues.apache.org/jira/browse/HADOOP-17038 > Project: Hadoop Common > Issue Type: Sub-task >Reporter: Anoop Sam John >Assignee: Anoop Sam John >Priority: Major > Labels: HBase, abfsactive, pull-request-available > Attachments: HBase Perf Test Report.xlsx, screenshot-1.png > > Time Spent: 40m > Remaining Estimate: 0h > > 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
[jira] [Updated] (HADOOP-17038) Support disabling buffered reads in ABFS positional reads
[ https://issues.apache.org/jira/browse/HADOOP-17038?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Anoop Sam John updated HADOOP-17038: Summary: Support disabling buffered reads in ABFS positional reads (was: Support positional read in AbfsInputStream) > Support disabling buffered reads in ABFS positional reads > - > > Key: HADOOP-17038 > URL: https://issues.apache.org/jira/browse/HADOOP-17038 > Project: Hadoop Common > Issue Type: Sub-task >Reporter: Anoop Sam John >Assignee: Anoop Sam John >Priority: Major > Labels: HBase, abfsactive, pull-request-available > Attachments: HBase Perf Test Report.xlsx, screenshot-1.png > > Time Spent: 40m > Remaining Estimate: 0h > > 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) -- 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
