HBASE-21879 Read HFile ’s Block into ByteBuffer directly.HBASE-21879 Read HFile ’s Block into ByteBuffer directly. 1. Background For reducing the Java GC impact to p99/p999 RPC latency, HBase 2.x has made an offheap read and write path. The KV are allocated BucketCache firstly, if the Cache misses, go to the HFile and read the corresponding block. The workflow: reading block from cache OR sending cells to client, is basically not involved in heap memory allocations that the process of reading the Block from HFile is still copied to the heap firstly, the heap block won’t free unless the WriterThread of BucketCache flushes the Block to offheap IOEngine successfully0 码力 | 18 页 | 1.14 MB | 1 年前3
Navicat Version 16 User Guide (Mac)
Generator 193 Gender Generator 194 Title Generator 194 Marital Status Generator 195 Phone Number Generator 195 Email Generator 196 Job Title Generator 196 Social Network ID Generator available in any manner to any third party for use in the third party's business operations; and b. title to the Programs from passing to the end user or any other party; 3. not reverse engineer, disassemble license gives you limited license to use the Software. PremiumSoft and its suppliers retain all rights, title and interest, including all copyright and intellectual property rights, in and to, the Software0 码力 | 324 页 | 7.77 MB | 1 年前3
Navicat Version 16 Windows User Guide Generator 196 Gender Generator 196 Title Generator 196 Marital Status Generator 196 Phone Number Generator 197 Email Generator 197 Job Title Generator 197 Social Network ID Generator available in any manner to any third party for use in the third party's business operations; and b. title to the Programs from passing to the end user or any other party; 3. not reverse engineer, disassemble license gives you limited license to use the Software. PremiumSoft and its suppliers retain all rights, title and interest, including all copyright and intellectual property rights, in and to, the Software0 码力 | 324 页 | 3.93 MB | 1 年前3
Navicat Version 16 Linux User Guide Generator 196 Gender Generator 196 Title Generator 196 Marital Status Generator 196 Phone Number Generator 197 Email Generator 197 Job Title Generator 197 Social Network ID Generator available in any manner to any third party for use in the third party's business operations; and b. title to the Programs from passing to the end user or any other party; 3. not reverse engineer, disassemble license gives you limited license to use the Software. PremiumSoft and its suppliers retain all rights, title and interest, including all copyright and intellectual property rights, in and to, the Software0 码力 | 321 页 | 6.65 MB | 1 年前3
Navicat Charts Creator Version 1 User Guide (Windows)
available in any manner to any third party for use in the third party's business operations; and b. title to the Programs from passing to the end user or any other party; 3. not reverse engineer, disassemble gives you limited license to use the Software. PremiumSoft and its suppliers retain all rights, title and interest, including all copyright and intellectual property rights, in and to, the Software (as merchantability or fitness for a particular purpose. Also, there is no warranty of non-infringement and title or quiet enjoyment. PremiumSoft does not warrant that the Software is error-free or will operate0 码力 | 112 页 | 1.64 MB | 1 年前3
Navicat Charts Viewer Version 1 Linux User Guide
available in any manner to any third party for use in the third party's business operations; and b. title to the Programs from passing to the end user or any other party; 3. not reverse engineer, disassemble gives you limited license to use the Software. PremiumSoft and its suppliers retain all rights, title and interest, including all copyright and intellectual property rights, in and to, the Software (as merchantability or fitness for a particular purpose. Also, there is no warranty of non-infringement and title or quiet enjoyment. PremiumSoft does not warrant that the Software is error-free or will operate0 码力 | 110 页 | 2.28 MB | 1 年前3
Navicat Charts Creator Version 1 User Guide (Mac)
available in any manner to any third party for use in the third party's business operations; and b. title to the Programs from passing to the end user or any other party; 3. not reverse engineer, disassemble gives you limited license to use the Software. PremiumSoft and its suppliers retain all rights, title and interest, including all copyright and intellectual property rights, in and to, the Software (as merchantability or fitness for a particular purpose. Also, there is no warranty of non-infringement and title or quiet enjoyment. PremiumSoft does not warrant that the Software is error-free or will operate0 码力 | 111 页 | 2.34 MB | 1 年前3
Firebird Docwriting Guide German„Kapi- telelementen“, „Titelelementen“, etc. zu sprechen. Richtiger wären aber „Kapitel-Tags“ und „Title-Tags“. Die Begriffe werden oft synonym verwendet, aber an manchen Stellen ist es wichtig die Unterschiede wird in ein einzelnes Leerzeichen in der Ausgabe umgewandelt. So wird aus:<title>Firebird Architecturestitle> diese Ausgabe:Now let's have a look at Firebird's different architectures. server. <title>Firebird Architecturestitle> Now let's have a look at Firebird's different architectures. 0 码力 | 49 页 | 228.41 KB | 1 年前3
firebird language reference 30 rusхранимые процедуры ....................................................................... 319 EXECUTE BLOCK ................................................................................................. и триггерах), но сравнительно недавно они стали также доступны в Динамическом SQL (смотри EXECUTE BLOCK). Встроенный SQL определяет подмножество DSQL, поддерживаемое средством Firebird GPRE. GPRE — пр типа комментариев: блочные и однострочные. Синтаксис:::= <block comment> | <block comment> ::= Структура языка 27 /* [ …]*/ 0 码力 | 719 页 | 3.98 MB | 1 年前3
Firebird 2.5 Language Reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255 6.8. EXECUTE BLOCK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . triggers) only, but in more recent releases they were surfaced in Dynamic SQL as well (see EXECUTE BLOCK). Embedded SQL defines the DSQL subset supported by Firebird gpre, the application which allows of comments. Firebird supports two types of comments: block and in-line. Syntax::= <block comment> | <block comment> ::= /* [ …] */ 0 码力 | 521 页 | 2.30 MB | 1 年前3
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