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From Lars George <lars.geo...@gmail.com>
Subject Re: Hbase inserts very slow
Date Wed, 16 Feb 2011 09:26:47 GMT
Hi Vishal,

These are DEBUG level messages and are from the block cache, there is
nothing wrong with that. Can you explain more what you do and see?

Lars

On Wed, Feb 16, 2011 at 4:24 AM, Vishal Kapoor
<vishal.kapoor.in@gmail.com> wrote:
> all was working fine and suddenly I see a lot of logs like below
>
> 2011-02-15 22:19:04,023 DEBUG
> org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache LRU eviction
> started; Attempting to free 19.88 MB of total=168.64 MB
> 2011-02-15 22:19:04,025 DEBUG
> org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache LRU eviction
> completed; freed=19.91 MB, total=148.73 MB, single=74.47 MB, multi=92.37 MB,
> memory=166.09 KB
> 2011-02-15 22:19:11,207 DEBUG
> org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache LRU eviction
> started; Attempting to free 19.88 MB of total=168.64 MB
> 2011-02-15 22:19:11,444 DEBUG
> org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache LRU eviction
> completed; freed=19.93 MB, total=149.09 MB, single=73.91 MB, multi=93.32 MB,
> memory=166.09 KB
> 2011-02-15 22:19:21,494 DEBUG
> org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache LRU eviction
> started; Attempting to free 19.87 MB of total=168.62 MB
> 2011-02-15 22:19:21,760 DEBUG
> org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache LRU eviction
> completed; freed=19.91 MB, total=148.84 MB, single=74.22 MB, multi=92.73 MB,
> memory=166.09 KB
> 2011-02-15 22:19:39,838 DEBUG
> org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache LRU eviction
> started; Attempting to free 19.87 MB of total=168.62 MB
> 2011-02-15 22:19:39,852 DEBUG
> org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache LRU eviction
> completed; freed=19.91 MB, total=148.71 MB, single=75.35 MB, multi=91.48 MB,
> memory=166.09 KB
> 2011-02-15 22:19:49,768 DEBUG
> org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache LRU eviction
> started; Attempting to free 19.87 MB of total=168.62 MB
> 2011-02-15 22:19:49,770 DEBUG
> org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache LRU eviction
> completed; freed=19.91 MB, total=148.71 MB, single=76.48 MB, multi=90.35 MB,
> memory=166.09 KB
>
>
> I haven't changed anything including the table definitions.
> please let me know where to look...
>
> thanks,
> Vishal Kapoor
>

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