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Posted to issues@hbase.apache.org by "Lars Hofhansl (Issue Comment Edited) (JIRA)" <ji...@apache.org> on 2011/12/20 19:14:30 UTC
[jira] [Issue Comment Edited] (HBASE-5058) Allow HBaseAmin to use
an existing connection
[ https://issues.apache.org/jira/browse/HBASE-5058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13173364#comment-13173364 ]
Lars Hofhansl edited comment on HBASE-5058 at 12/20/11 6:12 PM:
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@Stack: I think that about sums it up. The complexity of layers and timeout stories are alleviated somewhat by parent HBASE-4805 (no per HTable threadpool, HTablePool no longer needed).
I had a brief look at the first issue, unless I am missing something this would require a nontrivial amount of refactoring. The simplest would be to do all network IO from the Connection thread rather than the application thread (as described in HBASE-4956). Would need allow for the client to synchronize and retrieve exceptions on/from a Future.
Short term, should we take HBASE-4805 all the way and add a getTable(...) method to HConnection? (Or even further and add put/get/scan/etc methods that take a table name to HConnection?)
Long term a design based on asynchhbase with a thin synchronous layer on top is probably the best option.
was (Author: lhofhansl):
@Stack: I think that about sums it up. The complexity of layers and timeout stories are alleviated somewhat by parent HBASE-4805 (no per HTable threadpool, HTablePool no longer needed).
I had a brief look at the first issue, unless I am missing something this would require a nontrivial amount of refactoring. The simplest would be to do all network IO from the Connection thread rather than the application thread (as described in HBASE-4956). Would need allow for the client to synchronize and retrieved exceptions on/from a Future.
Short term, should we take HBASE-4805 all the way and a getTable(...) method to HConnection? (Or even further and add put/get/scan/etc methods that take a table name to HConnection?)
Long term a design based on asynchhbase with a thin synchronous layer on top is probably the best option.
> Allow HBaseAmin to use an existing connection
> ---------------------------------------------
>
> Key: HBASE-5058
> URL: https://issues.apache.org/jira/browse/HBASE-5058
> Project: HBase
> Issue Type: Sub-task
> Components: client
> Affects Versions: 0.94.0
> Reporter: Lars Hofhansl
> Assignee: Lars Hofhansl
> Priority: Minor
> Fix For: 0.94.0
>
> Attachments: 5058-v2.txt, 5058-v3.txt, 5058-v3.txt, 5058.txt
>
>
> What HBASE-4805 does for HTables, this should do for HBaseAdmin.
> Along with this the shared error handling and retrying between HBaseAdmin and HConnectionManager can also be improved. I'll attach a first pass patch soon.
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