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https://issues.apache.org/jira/browse/HBASE-4109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13068732#comment-13068732
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[email protected] commented on HBASE-4109:
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Should : String domainNamePointerToHostName(String dnPtr) be in
o.a.h.h.util.Strings? Perhaps it would be better in o.a.h.h.util.Addressing?
- Eugene
On 2011-07-18 18:41:16, Shrijeet Paliwal wrote:
bq.
bq. -----------------------------------------------------------
bq. This is an automatically generated e-mail. To reply, visit:
bq. https://reviews.apache.org/r/1139/
bq. -----------------------------------------------------------
bq.
bq. (Updated 2011-07-18 18:41:16)
bq.
bq.
bq. Review request for hbase and Michael Stack.
bq.
bq.
bq. Summary
bq. -------
bq.
bq. If you are using an interface anything other than 'default' (literally
that keyword) DNS.java 's getDefaultHost will return a string which will
bq. have a trailing period at the end. It seems javadoc of reverseDns in
DNS.java (see below) is conflicting with what that function is actually doing.
bq. It is returning a PTR record while claims it returns a hostname. The PTR
record always has period at the end , RFC: http://irbs.net/bog-4.9.5/bog47.html
bq.
bq. This patch adds a sanitizing function and wraps all calls to
getDefaultHost to go through a step of removing trailing period.
bq.
bq.
bq. This addresses bug HBASE-4109.
bq. https://issues.apache.org/jira/browse/HBASE-4109
bq.
bq.
bq. Diffs
bq. -----
bq.
bq. src/main/java/org/apache/hadoop/hbase/util/Strings.java c2cad2e
bq. src/main/java/org/apache/hadoop/hbase/zookeeper/HQuorumPeer.java d551c6f
bq. src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
2d033f3
bq. src/main/java/org/apache/hadoop/hbase/master/HMaster.java c91523a
bq.
bq. Diff: https://reviews.apache.org/r/1139/diff
bq.
bq.
bq. Testing
bq. -------
bq.
bq.
bq. Thanks,
bq.
bq. Shrijeet
bq.
bq.
> Hostname returned via reverse dns lookup contains trailing period if
> configured interface is not "default"
> ----------------------------------------------------------------------------------------------------------
>
> Key: HBASE-4109
> URL: https://issues.apache.org/jira/browse/HBASE-4109
> Project: HBase
> Issue Type: Bug
> Components: master, regionserver
> Affects Versions: 0.90.3
> Reporter: Shrijeet Paliwal
> Fix For: 0.90.4
>
> Attachments:
> 0001-HBASE-4109-Sanitize-hostname-returned-from-DNS-class.patch
>
>
> If you are using an interface anything other than 'default' (literally that
> keyword) DNS.java 's getDefaultHost will return a string which will
> have a trailing period at the end. It seems javadoc of reverseDns in DNS.java
> (see below) is conflicting with what that function is actually doing.
> It is returning a PTR record while claims it returns a hostname. The PTR
> record always has period at the end , RFC:
> http://irbs.net/bog-4.9.5/bog47.html
> We make call to DNS.getDefaultHost at more than one places and treat that as
> actual hostname.
> Quoting HRegionServer for example
> {code}
> String machineName = DNS.getDefaultHost(conf.get(
> "hbase.regionserver.dns.interface", "default"), conf.get(
> "hbase.regionserver.dns.nameserver", "default"));
> {code}
> This causes inconsistencies. An example of such inconsistency was observed
> while debugging the issue "Regions not getting reassigned if RS is brought
> down". More here
> http://search-hadoop.com/m/CANUA1qRCkQ1
> We may want to sanitize the string returned from DNS class. Or better we can
> take a path of overhauling the way we do DNS name matching all over.
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