hbase key 设计
Table of Contents Introduction Data Model Conceptual View Physical Storage View Architecture and Implementation hbaseMaster HRegionServer hbase Client Introduction In order to better understand this document, it is highly recommended that the Google Bigtable paper be read first. hbase is an Apache open source project whose goal is to provide Bigtable-like storage for ...
by micklongen - NoSQL技术 - 2009-10-03 19:31:45 阅读（2625） 回复（0）
[ 45.524552] usb 1-1: new full speed USB device using uhci_hcd and address 3 [ 45.720482] usb 1-1: configuration #1 chosen from 1 choice [ 45.770581] usb 1-1: New USB device found, idVendor=4612, idProduct=04b4 [ 45.770614] usb 1-1: New USB device strings: Mfr=4, Product=3, SerialNumber=2 [ 45.770653] usb 1-1: Product: USB key [ 45.770671] usb 1-1: Manufacturer: HengTai [ 45.770686] ...
I'm writing a Perl script to convert Openssh DSA public key to Putty format. There's a C code does similar thing but only for RSA key. I got problem when creating hmac hash. I don't know much C and want to use Perl to do the same thing as followig C routine does. Can anyone helps? Thanks. source http://www.anchor.net.au/code/openssh2putty.c // binary strings with 4 octet length header when du...
I'm writing a Perl script to convert Openssh DSA public key to Putty format. There's a C code does similar thing but only for RSA key. I got problem when creating hmac hash. I don't know much C and want to use Perl to do the same thing as followig C routine does. Can anyone helps? Thanks. source http://www.anchor.net.au/code/openssh2putty.c bstring * asciiz_to_bstring(const char *s) { unsigne...
HOME — MySQL MySQL Performance Tuning key See also MySQL Performance Tuning Primer . This document is still under construction! Thus it is still a little chaotic. Please feel free to mail recommendations, suggestions, etc. to [email=oli.sennhauser@bluewin.ch]me[/email] . This key should give you a guide how to best tune you MySQL database systematically... It should also work similar for o...
大家好！我在my.cnf里面，有设置到 key_buffer = 64M sort_buffer_size = 512K net_buffer_length = 8K read_buffer_size = 256K read_rnd_buffer_size = 512K myisam_sort_buffer_size = 8M 但是我从mysql administator里面看key buffer是为0，我们的数据库是用了innodb，目前前端在线2000人以上，请问为什么一点key buffer都没用到呢？
原来表上的unique key是legacyId,customerId 现在我想调整为customerId, legacyId alter table语句怎么写啊？ CREATE TABLE `edialog_mapping` ( `legacyId` int(11) NOT NULL, `customerId` int(11) NOT NULL, UNIQUE key `edialog_uq` (`legacyId`,`customerId`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
