December 2012
Intermediate to advanced
572 pages
13h 8m
Chinese
Content preview from HBASE技術手冊
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
296
|
第六章
上線中的區域
（Online regions）
在這裡可以看到目前選擇的 region 伺服器所控制的全部 region。這個表格有 region
名稱（region name）、開始鍵（start key）和結束鍵（end key），和區域指標（region
metrics）。
分享的網頁
在 master、region server 和 table pages 上面，也有幾個一般的連結，引導你到後續的網
頁、顯示或控制額外的細節設定。
本機日誌
（Local logs）
這個連結提供一個很快的方法來存取日誌檔案，而不需要透過伺服器本身來存取。
它一開始會列出
log
目錄的內容，在這兒你可以選擇想要看到日誌檔案。點選一個
日誌會顯示它的內容。在 487 頁“分析日誌”，會幫助你瞭解所看到內容的意義。圖
6-9 為一個範例網頁。
圖 6-9 本機日誌（Local Logs）網頁
285
可用的客戶端
|
297
執行緒傾印
（Thread dumps）
為了偵錯目的，你可以使用這個連結來傾印執行中的 HBase 程序之 Java 堆疊追踨資
訊。你可以在第 485 頁“疑難排解”找到更詳細的資訊。圖 6-19 為輸出範例。
日誌層級
（Log level）
這個連結會引導你到一個小的表單，讓你取得和設定
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.