Wei-Chiu Chuang created HADOOP-16452:
----------------------------------------
Summary: Increase ipc.maximum.data.length default from 64MB to
128MB
Key: HADOOP-16452
URL: https://issues.apache.org/jira/browse/HADOOP-16452
Project: Hadoop Common
Issue Type: Improvement
Components: ipc
Affects Versions: 2.6.0
Reporter: Wei-Chiu Chuang
Reason for bumping the default:
Denser DataNodes are common. It is not uncommon to find a DataNode with > 7
million blocks these days.
With such a high number of blocks, the block report message can exceed the 64mb
limit (defined by ipc.maximum.data.length). The block reports are rejected,
causing missing blocks in HDFS. We had to double this configuration value in
order to work around the issue.
We are seeing an increasing number of these cases. I think it's time to revisit
some of these default values as the hardware evolves.
--
This message was sent by Atlassian JIRA
(v7.6.14#76016)
---------------------------------------------------------------------
To unsubscribe, e-mail: common-dev-unsubscr...@hadoop.apache.org
For additional commands, e-mail: common-dev-h...@hadoop.apache.org
