[ https://issues.apache.org/jira/browse/HDFS-5461?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Liang Xie reassigned HDFS-5461: ------------------------------- Assignee: Liang Xie > fallback to non-ssr(local short circuit reads) while oom detected > ----------------------------------------------------------------- > > Key: HDFS-5461 > URL: https://issues.apache.org/jira/browse/HDFS-5461 > Project: Hadoop HDFS > Issue Type: Improvement > Affects Versions: 3.0.0, 2.2.0 > Reporter: Liang Xie > Assignee: Liang Xie > Attachments: HDFS-5461.txt > > > Currently, the DirectBufferPool used by ssr feature seems doesn't have a > upper-bound limit except DirectMemory VM option. So there's a risk to > encounter direct memory oom. see HBASE-8143 for example. > IMHO, maybe we could improve it a bit: > 1) detect OOM or reach a setting up-limit from caller, then fallback to > non-ssr > 2) add a new metric about current raw consumed direct memory size. -- This message was sent by Atlassian JIRA (v6.1#6144)