[jira] [Resolved] (HDFS-16422) Fix thread safety of EC decoding during concurrent preads
[ https://issues.apache.org/jira/browse/HDFS-16422?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Steve Loughran resolved HDFS-16422. --- Fix Version/s: 3.3.3 (was: 3.4.0) (was: 3.3.4) Resolution: Fixed in release 3.3.3 note that in branch-3.3+ the commit message doesn't include the JIRA ID. added during the backport > Fix thread safety of EC decoding during concurrent preads > - > > Key: HDFS-16422 > URL: https://issues.apache.org/jira/browse/HDFS-16422 > Project: Hadoop HDFS > Issue Type: Bug > Components: dfsclient, ec, erasure-coding >Affects Versions: 3.3.0, 3.3.1 >Reporter: daimin >Assignee: daimin >Priority: Critical > Labels: pull-request-available > Fix For: 3.3.3, 3.2.3 > > Time Spent: 3h 40m > Remaining Estimate: 0h > > Reading data on an erasure-coded file with missing replicas(internal block of > block group) will cause online reconstruction: read dataUnits part of data > and decode them into the target missing data. Each DFSStripedInputStream > object has a RawErasureDecoder object, and when we doing pread concurrently, > RawErasureDecoder.decode will be invoked concurrently too. > RawErasureDecoder.decode is not thread safe, as a result of that we get wrong > data from pread occasionally. -- This message was sent by Atlassian Jira (v8.20.1#820001) - To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org
[jira] [Resolved] (HDFS-16422) Fix thread safety of EC decoding during concurrent preads
[ https://issues.apache.org/jira/browse/HDFS-16422?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Wei-Chiu Chuang resolved HDFS-16422. Fix Version/s: 3.4.0 3.2.3 3.3.3 Resolution: Fixed Thanks [~cndaimin] for the great finding! > Fix thread safety of EC decoding during concurrent preads > - > > Key: HDFS-16422 > URL: https://issues.apache.org/jira/browse/HDFS-16422 > Project: Hadoop HDFS > Issue Type: Bug > Components: dfsclient, ec, erasure-coding >Affects Versions: 3.3.0, 3.3.1 >Reporter: daimin >Assignee: daimin >Priority: Critical > Labels: pull-request-available > Fix For: 3.4.0, 3.2.3, 3.3.3 > > Time Spent: 3h > Remaining Estimate: 0h > > Reading data on an erasure-coded file with missing replicas(internal block of > block group) will cause online reconstruction: read dataUnits part of data > and decode them into the target missing data. Each DFSStripedInputStream > object has a RawErasureDecoder object, and when we doing pread concurrently, > RawErasureDecoder.decode will be invoked concurrently too. > RawErasureDecoder.decode is not thread safe, as a result of that we get wrong > data from pread occasionally. -- This message was sent by Atlassian Jira (v8.20.1#820001) - To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org
