[
https://issues.apache.org/jira/browse/HBASE-828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12623722#action_12623722
]
Izaak Rubin commented on HBASE-828:
-----------------------------------
I don't think there's much more testing I can do on this, based on some advice
I got from Jim Kellerman on the issue:
"you have no control on flushing stuff to disk other than shutting down HBase
and restarting it. There should be no need as the caches should do the right
thing. If they don't, I need to see an example."
I had a thought about your use of Text. The internal bytes of a Text pad on a
few extra '\0' characters. So, it's important to note that the bytes returned
from {new Text("TestTable5").getBytes();} are not the same as those returned
from {"TestTable5".getBytes();}. HBase doesn't do anything fancy to make these
two equivalent. So, if you pass in {new Text("TestTable5").getBytes();} to the
constructor of your HTableDescriptor, using {tableExists(new
Text("TestTable5"));} should work fine, but if you use Strings you'll run into
problems.
Ah, and here's another thing I just discovered: the bytes for new
Text("tableA") and "tableA" are the same. So the amount of padding varies with
the length of the String.
Look into this and let me know if there's still something weird happening.
> HBaseAdmin.tableExists(new Text("TestTable5")) returns false when table
> actually exists.
> ----------------------------------------------------------------------------------------
>
> Key: HBASE-828
> URL: https://issues.apache.org/jira/browse/HBASE-828
> Project: Hadoop HBase
> Issue Type: Bug
> Components: util
> Affects Versions: 0.2.0
> Reporter: Ryan Smith
> Priority: Minor
> Fix For: 0.3.0
>
>
> Process:
> One the 1st MR job, i use tableExists( new Text("TestTable5")) & tableCreate
> to create the table.
> On the 2nd MR job, I call tableExists(new Text("TestTable5")), which returns
> false, then i call disableTable, deleteTable, and finally createTable.
> Workaround for now is to avoid using Text. tableExists(byte[]) works when i
> tested it.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
