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https://issues.apache.org/jira/browse/HBASE-7930?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13586063#comment-13586063
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Jean-Marc Spaggiari commented on HBASE-7930:
--------------------------------------------
hi Dave,
This is the code generating this warning:
{code}
byte [] bytes =
result.getValue(HConstants.CATALOG_FAMILY,
HConstants.REGIONINFO_QUALIFIER);
if (bytes == null) {
LOG.warn("REGIONINFO_QUALIFIER is empty in " + result);
return null;
}
{code}
And it's the only place where this is printed into the logs. I "grepped" the
code and was not able to find anywhere else where this is printed. So this
warning is displayed only when we are not able to find the REGIONINFO_QUALIFIER
in CATALOG_FAMILY the row.
>From what is remaining in the table:
entry,keyvalue,1360762149493.288611f36e195c950754ba88e9402950.
column=info:server, timestamp=1361046940033, value=node1:60020
entry,keyvalue,1360762149493.288611f36e195c950754ba88e9402950.
column=info:serverstartcode, timestamp=1361046940033, value=1361046923347
We don't know where to look into HDFS. If we remove those 2 lines and HBCK
found a region in the HDFS which is not into the .META., it will reconstruct
the entries in the .META. based in the HDFS content.
So I think we can safely remove those lines from the .META. and I don't think
there is anything else which can generate this WARNing.
> hbck should provide an option to fix empty REGIONINFO_QUALIFIER .META. rows.
> ----------------------------------------------------------------------------
>
> Key: HBASE-7930
> URL: https://issues.apache.org/jira/browse/HBASE-7930
> Project: HBase
> Issue Type: Improvement
> Reporter: Jean-Marc Spaggiari
> Assignee: Jean-Marc Spaggiari
>
> Today when master and HBCK are reporting empty REGIONINFO_QUALIFIER .META.
> rows, we need to manually delete them from the .META. region. We need to
> enhance hbck to do that automatically.
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