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From Peng Han <p...@pivotal.io>
Subject [Issue]Ambari HDFS parameters configuration checking errors in HAWQ 2.0.0.0 with HDP 2.4.2.0-258
Date Sat, 17 Dec 2016 10:06:23 GMT
Hi,

while "run service check" for HAWQ within Ambari, you may get such errors:

1.
20161207:14:48:29:182323
gpcheck:hlamaster02:gpadmin-[ERROR]:-host(hlamaster01): HDFS configuration:
expected 'dfs.namenode.accesstime.precision' for '-1', actual value is '0'

*"0" is the recommend value in the HAWQ documents. *
*May we need updating the corresponding value in "gpcheck.cnf"?*

2.
20161207:14:48:29:182323
gpcheck:hlamaster02:gpadmin-[ERROR]:-host(hlamaster01): HDFS configuration
missing: 'dfs.client.enable.read.from.local' needs to be set to 'true'

*There are a similar parameters in HDFS*

*"dfs.client.read.shortcircuit"*


*Is 'dfs.client.enable.read.from.local' actually needed?*
*If yes, is that because "libhdfs3" is used instead of the standard apache
hdfs lib?*
*If yes again, adding a <description> segment for this both in documents
and "gpcheck.cnf" may be a good idea.*

3.
20161207:14:48:29:182323
gpcheck:hlamaster02:gpadmin-[ERROR]:-host(hlamaster01): HDFS configuration
missing: 'ipc.server.handler.queue.size' needs to be set to '3300'

*I am not able to find any information about
'ipc.server.handler.queue.size' in the HAWQ 2.0.0 documents.*
*Is this a deprecated parameter inherited from Pivotal HD 2.1.0?*
*http://pivotalhd-210.docs.pivotal.io/doc/2010/PreparingtoInstallHAWQ.html
<http://pivotalhd-210.docs.pivotal.io/doc/2010/PreparingtoInstallHAWQ.html>*

Best regards,

*Parker Han*

Pivotal CSD - GRC

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