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From Andrey Stepachev <oct...@gmail.com>
Subject Re: How to speed up Scan -- please help
Date Mon, 13 Sep 2010 18:00:07 GMT
What "vmstat 1" shows?
Does gzip family used?

2010/9/13 Jian Lu <jlu@local.com>:
> Hi All,
>
> I am pulling my hair off here because the Scan takes 40 sec to scan 750,000 records.
 I am running HBase 0.20.4 on standalone mode on Linux with 16 GB RAM, 64-bit CPU/Operating
system/JVM.  My table is very simple with one family and five columns, each column contains
very small String (employee name, address, etc.).
>
> Below is my configuration.  Could you all please tell me what I missed?
>
> config.set("hbase.client.pause", "10000");
> config.set("hbase.client.retries.number", "100");
> config.set("hbase.client.scanner.caching", "10000");
>
> table.setScannerCaching(10000);
>
> scan.setCaching(10000);
> scan.setCacheBlocks(false);
>
>
> Thanks a lot!
> Jack.
>

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