[ https://issues.apache.org/jira/browse/SPARK-35258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mridul Muralidharan resolved SPARK-35258. ----------------------------------------- Fix Version/s: 3.2.0 Resolution: Fixed Issue resolved by pull request 32388 [https://github.com/apache/spark/pull/32388] > Enhance ESS ExternalBlockHandler with additional block rate-based metrics and > histograms > ---------------------------------------------------------------------------------------- > > Key: SPARK-35258 > URL: https://issues.apache.org/jira/browse/SPARK-35258 > Project: Spark > Issue Type: Improvement > Components: Shuffle, YARN > Affects Versions: 3.1.1 > Reporter: Erik Krogen > Assignee: Erik Krogen > Priority: Major > Fix For: 3.2.0 > > > Today the {{ExternalBlockHandler}} component of ESS exposes some useful > metrics, but is lacking around metrics for the rate of block transfers. We > have {{blockTransferRateBytes}} to tell us the rate of _bytes_, but no metric > to tell us the rate of _blocks_, which is especially relevant when running > the ESS on HDDs that are sensitive to random reads. Many small block > transfers can have a negative impact on performance, but won't show up as a > spike in {{blockTransferRateBytes}} since the sizes are small. > We can also enhance {{YarnShuffleServiceMetrics}} to expose histogram-style > metrics from the {{Timer}} instances within {{ExternalBlockHandler}} -- today > it is only exposing the count and rate, but not timing information from the > {{Snapshot}}. > These two changes can make it easier to monitor the health of the ESS. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org