[ https://issues.apache.org/jira/browse/HDFS-7868?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
zhouyingchao updated HDFS-7868: ------------------------------- Attachment: (was: HDFS-7868-001.patch) > Use proper blocksize to choose target for blocks > ------------------------------------------------ > > Key: HDFS-7868 > URL: https://issues.apache.org/jira/browse/HDFS-7868 > Project: Hadoop HDFS > Issue Type: Bug > Affects Versions: 2.6.0 > Reporter: zhouyingchao > Assignee: zhouyingchao > > In BlockPlacementPolicyDefault.java:isGoodTarget, the passed-in blockSize is > used to determine if there is enough room for a new block on a data node. > However, in two conditions the blockSize might not be proper for the purpose: > (a) the passed in block size is just the size of the last block of a file, > which might be very small (for e.g., called from > BlockManager.ReplicationWork.chooseTargets). (b) A file which might be > created with a smaller blocksize. > In these conditions, the calculated scheduledSize might be smaller than the > actual value, which finally might lead to following failure of writing or > replication. -- This message was sent by Atlassian JIRA (v6.3.4#6332)