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From stack <st...@duboce.net>
Subject Re: Replaying of HLog
Date Thu, 04 Jun 2009 02:22:36 GMT
On Wed, Jun 3, 2009 at 5:53 PM, Clint Morgan <cm-public@troove.net> wrote:

> Which seems weird because the hlog path points to a table's directory which
> is a different table than the given region. Does this seem right?
>
>
No.  It seems badly wrong.  I took a quick look at HLog#splitLog and how its
making up name of the file to write to.  I don't see anything obvious.  Its
using the HLogKey it got out of the commit log.  This in turn looks like it
has right table name going in -- it gets it from region whose commit is
being logged.

I see in below that it made queues for -ROOT- and .META.   Did these edits
get split into the right location?

St.Ack



> A larger portion of the log is below.
>
> [03/06/09 16:35:34] 530059 [        HMaster] INFO
> hadoop.hbase.regionserver.HLog  - Splitting 1 log(s) in
> file:/opt/troove-data/hadoop/hbase/log_10.0.1.196_1244071611670_7802
> [03/06/09 16:35:34] 530060 [        HMaster] DEBUG
> hadoop.hbase.regionserver.HLog  - Splitting hlog 1 of 1:
>
> file:/opt/troove-data/hadoop/hbase/log_10.0.1.196_1244071611670_7802/hlog.dat.1244071612170,
> length=45056
> [03/06/09 16:35:35] 530106 [        HMaster] DEBUG
> hadoop.hbase.regionserver.HLog  - Adding queue for -ROOT-,,0
> [03/06/09 16:35:35] 530110 [        HMaster] DEBUG
> hadoop.hbase.regionserver.HLog  - Adding queue for .META.,,1
> [03/06/09 16:35:35] 530120 [        HMaster] DEBUG
> hadoop.hbase.regionserver.HLog  - Adding queue for
> TransactionStatus,,1244059490418
> [03/06/09 16:35:35] 530121 [        HMaster] DEBUG
> hadoop.hbase.regionserver.HLog  - Adding queue for
> net_troove_coin_project_Project,,1244059485284
> [03/06/09 16:35:35] 530122 [        HMaster] DEBUG
> hadoop.hbase.regionserver.HLog  - Adding queue for
> net_troove_security_ApplicationUser,,1244059486102
> [03/06/09 16:35:35] 530124 [        HMaster] DEBUG
> hadoop.hbase.regionserver.HLog  - Adding queue for
> net_troove_coin_timeexpense_BaseLog,,1244059487257
> [03/06/09 16:35:35] 530124 [        HMaster] DEBUG
> hadoop.hbase.regionserver.HLog  - Adding queue for
> net_troove_coin_timeexpense_BaseLog-Base_Employee_ASCENDING,,1244059487520
> [03/06/09 16:35:35] 530133 [pool-1-thread-1] DEBUG
> hadoop.hbase.regionserver.HLog  - Thread got 2 to process
> [03/06/09 16:35:35] 530137 [pool-1-thread-3] DEBUG
> hadoop.hbase.regionserver.HLog  - Thread got 7 to process
> [03/06/09 16:35:35] 530137 [pool-1-thread-2] DEBUG
> hadoop.hbase.regionserver.HLog  - Thread got 220 to process
> [03/06/09 16:35:35] 530144 [pool-1-thread-4] DEBUG
> hadoop.hbase.regionserver.HLog  - Thread got 1 to process
> [03/06/09 16:35:35] 530149 [pool-1-thread-5] DEBUG
> hadoop.hbase.regionserver.HLog  - Thread got 18 to process
> [03/06/09 16:35:35] 530157 [pool-1-thread-6] DEBUG
> hadoop.hbase.regionserver.HLog  - Thread got 10 to process
> [03/06/09 16:35:35] 530209 [pool-1-thread-7] DEBUG
> hadoop.hbase.regionserver.HLog  - Thread got 10 to process
> [03/06/09 16:35:35] 530325 [pool-1-thread-3] DEBUG
> hadoop.hbase.regionserver.HLog  - Creating new hlog file writer for path
>
> file:/opt/troove-data/hadoop/hbase/net_troove_coin_timeexpense_BaseLog-Base_Employee_ASCENDING/228384672/oldlogfile.log
> and region TransactionStatus,,1244059490418
> [03/06/09 16:35:35] 530326 [pool-1-thread-3] DEBUG
> hadoop.hbase.regionserver.HLog  - Applied 7 total edits to
> TransactionStatus,,1244059490418 in 187ms
> [03/06/09 16:35:35] 530328 [pool-1-thread-1] DEBUG
> hadoop.hbase.regionserver.HLog  - Creating new hlog file writer for path
>
> file:/opt/troove-data/hadoop/hbase/net_troove_coin_timeexpense_BaseLog-Base_Employee_ASCENDING/70236052/oldlogfile.log
> and region -ROOT-,,0
> [03/06/09 16:35:35] 530328 [pool-1-thread-5] DEBUG
> hadoop.hbase.regionserver.HLog  - Creating new hlog file writer for path
>
> file:/opt/troove-data/hadoop/hbase/net_troove_coin_timeexpense_BaseLog-Base_Employee_ASCENDING/767391690/oldlogfile.log
> and region net_troove_coin_timeexpense_BaseLog,,1244059487257
> [03/06/09 16:35:35] 530329 [pool-1-thread-5] DEBUG
> hadoop.hbase.regionserver.HLog  - Applied 18 total edits to
> net_troove_coin_timeexpense_BaseLog,,1244059487257 in 173ms
> [03/06/09 16:35:35] 530329 [pool-1-thread-6] DEBUG
> hadoop.hbase.regionserver.HLog  - Creating new hlog file writer for path
>
> file:/opt/troove-data/hadoop/hbase/net_troove_coin_timeexpense_BaseLog-Base_Employee_ASCENDING/364454454/oldlogfile.log
> and region
> net_troove_coin_timeexpense_BaseLog-Base_Employee_ASCENDING,,1244059487520
> [03/06/09 16:35:35] 530329 [pool-1-thread-6] DEBUG
> hadoop.hbase.regionserver.HLog  - Applied 10 total edits to
> net_troove_coin_timeexpense_BaseLog-Base_Employee_ASCENDING,,1244059487520
> in 154ms
> [03/06/09 16:35:35] 530330 [pool-1-thread-2] DEBUG
> hadoop.hbase.regionserver.HLog  - Creating new hlog file writer for path
>
> file:/opt/troove-data/hadoop/hbase/net_troove_coin_timeexpense_BaseLog-Base_Employee_ASCENDING/1028785192/oldlogfile.log
> and region .META.,,1
> [03/06/09 16:35:35] 530328 [pool-1-thread-4] DEBUG
> hadoop.hbase.regionserver.HLog  - Creating new hlog file writer for path
>
> file:/opt/troove-data/hadoop/hbase/net_troove_coin_timeexpense_BaseLog-Base_Employee_ASCENDING/124273138/oldlogfile.log
> and region net_troove_coin_project_Project,,1244059485284
> [03/06/09 16:35:35] 530331 [pool-1-thread-4] DEBUG
> hadoop.hbase.regionserver.HLog  - Applied 1 total edits to
> net_troove_coin_project_Project,,1244059485284 in 187ms
> [03/06/09 16:35:35] 530330 [pool-1-thread-7] DEBUG
> hadoop.hbase.regionserver.HLog  - Creating new hlog file writer for path
>
> file:/opt/troove-data/hadoop/hbase/net_troove_coin_timeexpense_BaseLog-Base_Employee_ASCENDING/395668855/oldlogfile.log
> and region net_troove_security_ApplicationUser,,1244059486102
>

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