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Posted to common-user@hadoop.apache.org by Harsh J <ha...@cloudera.com> on 2013/05/23 14:24:17 UTC

Re: dncp_block_verification log

Hi,

What is your HDFS version? I vaguely remember this to be a problem in the
2.0.0 version or so where there was also a block scanner excessive work
bug, but I'm not sure what fixed it. I've not seen it appear in the later
releases.


On Thu, May 23, 2013 at 12:08 PM, Brahma Reddy Battula <
brahmareddy.battula@huawei.com> wrote:

>  Hi All,
>
>
>
> On some systems, I noticed that when the scanner runs, the
> dncp_block_verification.log.curr file under the block pool gets quite large
> ..
>
>
>
>
>
> Please let me know..
>
>
>
> i) why it is growing in only some machines..?
>
> ii) Wht's solution..?
>
>
>
> Following links also will describes the problem....
>
>
>
>
> http://mail-archives.apache.org/mod_mbox/hadoop-mapreduce-user/201303.mbox/%3CCAJzooYcpAD5W6CqDTeLiUfY-h9R0piNd9F0XELvT2BftWMmVTA@mail.gmail.com%3E
>
>
>
> Thanks
>
>
>
> Brahma Reddy
>



-- 
Harsh J

RE: dncp_block_verification log

Posted by Brahma Reddy Battula <br...@huawei.com>.
HI Harsh





Thanks for reply...



I am using hadoop-2.0.1



________________________________

From: Harsh J [harsh@cloudera.com]
Sent: Thursday, May 23, 2013 8:24 PM
To: <us...@hadoop.apache.org>
Subject: Re: dncp_block_verification log

Hi,

What is your HDFS version? I vaguely remember this to be a problem in the 2.0.0 version or so where there was also a block scanner excessive work bug, but I'm not sure what fixed it. I've not seen it appear in the later releases.


On Thu, May 23, 2013 at 12:08 PM, Brahma Reddy Battula <br...@huawei.com>> wrote:

Hi All,



On some systems, I noticed that when the scanner runs, the dncp_block_verification.log.curr file under the block pool gets quite large ..





Please let me know..



i) why it is growing in only some machines..?

ii) Wht's solution..?



Following links also will describes the problem....



http://mail-archives.apache.org/mod_mbox/hadoop-mapreduce-user/201303.mbox/%3CCAJzooYcpAD5W6CqDTeLiUfY-h9R0piNd9F0XELvT2BftWMmVTA@mail.gmail.com%3E



Thanks



Brahma Reddy



--
Harsh J

RE: dncp_block_verification log

Posted by Brahma Reddy Battula <br...@huawei.com>.
HI Harsh





Thanks for reply...



I am using hadoop-2.0.1



________________________________

From: Harsh J [harsh@cloudera.com]
Sent: Thursday, May 23, 2013 8:24 PM
To: <us...@hadoop.apache.org>
Subject: Re: dncp_block_verification log

Hi,

What is your HDFS version? I vaguely remember this to be a problem in the 2.0.0 version or so where there was also a block scanner excessive work bug, but I'm not sure what fixed it. I've not seen it appear in the later releases.


On Thu, May 23, 2013 at 12:08 PM, Brahma Reddy Battula <br...@huawei.com>> wrote:

Hi All,



On some systems, I noticed that when the scanner runs, the dncp_block_verification.log.curr file under the block pool gets quite large ..





Please let me know..



i) why it is growing in only some machines..?

ii) Wht's solution..?



Following links also will describes the problem....



http://mail-archives.apache.org/mod_mbox/hadoop-mapreduce-user/201303.mbox/%3CCAJzooYcpAD5W6CqDTeLiUfY-h9R0piNd9F0XELvT2BftWMmVTA@mail.gmail.com%3E



Thanks



Brahma Reddy



--
Harsh J

RE: dncp_block_verification log

Posted by Brahma Reddy Battula <br...@huawei.com>.
HI Harsh





Thanks for reply...



I am using hadoop-2.0.1



________________________________

From: Harsh J [harsh@cloudera.com]
Sent: Thursday, May 23, 2013 8:24 PM
To: <us...@hadoop.apache.org>
Subject: Re: dncp_block_verification log

Hi,

What is your HDFS version? I vaguely remember this to be a problem in the 2.0.0 version or so where there was also a block scanner excessive work bug, but I'm not sure what fixed it. I've not seen it appear in the later releases.


On Thu, May 23, 2013 at 12:08 PM, Brahma Reddy Battula <br...@huawei.com>> wrote:

Hi All,



On some systems, I noticed that when the scanner runs, the dncp_block_verification.log.curr file under the block pool gets quite large ..





Please let me know..



i) why it is growing in only some machines..?

ii) Wht's solution..?



Following links also will describes the problem....



http://mail-archives.apache.org/mod_mbox/hadoop-mapreduce-user/201303.mbox/%3CCAJzooYcpAD5W6CqDTeLiUfY-h9R0piNd9F0XELvT2BftWMmVTA@mail.gmail.com%3E



Thanks



Brahma Reddy



--
Harsh J

RE: dncp_block_verification log

Posted by Brahma Reddy Battula <br...@huawei.com>.
HI Harsh





Thanks for reply...



I am using hadoop-2.0.1



________________________________

From: Harsh J [harsh@cloudera.com]
Sent: Thursday, May 23, 2013 8:24 PM
To: <us...@hadoop.apache.org>
Subject: Re: dncp_block_verification log

Hi,

What is your HDFS version? I vaguely remember this to be a problem in the 2.0.0 version or so where there was also a block scanner excessive work bug, but I'm not sure what fixed it. I've not seen it appear in the later releases.


On Thu, May 23, 2013 at 12:08 PM, Brahma Reddy Battula <br...@huawei.com>> wrote:

Hi All,



On some systems, I noticed that when the scanner runs, the dncp_block_verification.log.curr file under the block pool gets quite large ..





Please let me know..



i) why it is growing in only some machines..?

ii) Wht's solution..?



Following links also will describes the problem....



http://mail-archives.apache.org/mod_mbox/hadoop-mapreduce-user/201303.mbox/%3CCAJzooYcpAD5W6CqDTeLiUfY-h9R0piNd9F0XELvT2BftWMmVTA@mail.gmail.com%3E



Thanks



Brahma Reddy



--
Harsh J