[ https://issues.apache.org/jira/browse/HDFS-7915?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Colin Patrick McCabe updated HDFS-7915: --------------------------------------- Resolution: Fixed Status: Resolved (was: Patch Available) > The DataNode can sometimes allocate a ShortCircuitShm slot and fail to tell > the DFSClient about it because of a network error > ----------------------------------------------------------------------------------------------------------------------------- > > Key: HDFS-7915 > URL: https://issues.apache.org/jira/browse/HDFS-7915 > Project: Hadoop HDFS > Issue Type: Bug > Affects Versions: 2.7.0 > Reporter: Colin Patrick McCabe > Assignee: Colin Patrick McCabe > Fix For: 2.7.0 > > Attachments: HDFS-7915.001.patch, HDFS-7915.002.patch, > HDFS-7915.004.patch, HDFS-7915.005.patch, HDFS-7915.006.patch > > > The DataNode can sometimes allocate a ShortCircuitShm slot and fail to tell > the DFSClient about it because of a network error. In > {{DataXceiver#requestShortCircuitFds}}, the DataNode can succeed at the first > part (mark the slot as used) and fail at the second part (tell the DFSClient > what it did). The "try" block for unregistering the slot only covers a > failure in the first part, not the second part. In this way, a divergence can > form between the views of which slots are allocated on DFSClient and on > server. -- This message was sent by Atlassian JIRA (v6.3.4#6332)