-
Notifications
You must be signed in to change notification settings - Fork 0
/
index.html
492 lines (325 loc) · 11.6 KB
/
index.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
<!DOCTYPE html>
<html lang="zh-cmn-Hans">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Why So Serious?</title>
<link rel="icon" href="/blog/assets/smile.JPG">
<!--link rel="stylesheet" href="//cdn.jsdelivr.net/highlight.js/9.10.0/styles/github-gist.min.css"-->
<link rel="stylesheet" href="//cdn.jsdelivr.net/highlight.js/9.10.0/styles/github-gist.min.css">
<link rel="stylesheet" href="/blog/css/style.css">
<meta name="generator" content="Hexo 5.3.0"></head>
<body>
<div class="Shell">
<aside class='SideBar'>
<section class='avatar' style="background-image: url(/blog/assets/header.png)">
<div class='av-pic' style="background-image: url(/blog/assets/avatar.jpg)">
</div>
</section>
<section class='menu'>
<div>Why So Serious?</div>
<ul>
<a href="/blog/" class="Btn">
<li>Home</li>
</a>
<a href="/blog/categories/" class="Btn">
<li>Categories</li>
</a>
<a href="/blog/about/" class="Btn">
<li>About</li>
</a>
</ul>
</section>
<section class="media">
</section>
</aside>
<div class="container">
<div data-pager-shell>
<ul class="Index">
<li>
<article class='ListView'>
<header class="title">
<h1>
<a href="/blog/2023/05/17/Redission%E5%88%86%E5%B8%83%E5%BC%8F%E9%94%81%E6%BA%90%E7%A0%81%E7%AE%80%E6%9E%90/">Redission分布式锁源码简析</a>
</h1>
<div class='ListMeta'>
<time datetime="2023-05-17T08:35:45.000Z" itemprop="datePublished">
2023-05-17
</time>
/
<ul>
<li class="meta-text">
{ <a href="/blog/categories/Redis/">Redis</a> }
</li>
</ul>
</div>
</header>
<div>
<p>Redission获取分布式锁的源码简析</p>
<div class="more-link">
<a href="/blog/2023/05/17/Redission%E5%88%86%E5%B8%83%E5%BC%8F%E9%94%81%E6%BA%90%E7%A0%81%E7%AE%80%E6%9E%90/#more">Read On »</a>
</div>
</div>
</article>
</li>
<li>
<article class='ListView'>
<header class="title">
<h1>
<a href="/blog/2023/02/19/%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F%E7%9F%A5%E8%AF%86%E7%82%B9%E6%80%BB%E7%BB%93/">操作系统相关知识总结</a>
</h1>
<div class='ListMeta'>
<time datetime="2023-02-19T06:35:45.000Z" itemprop="datePublished">
2023-02-19
</time>
/
<ul>
<li class="meta-text">
{ <a href="/blog/categories/Notebook/">Notebook</a> }
</li>
</ul>
</div>
</header>
<div>
<p>操作系统相关的常见知识点总结</p>
<div class="more-link">
<a href="/blog/2023/02/19/%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F%E7%9F%A5%E8%AF%86%E7%82%B9%E6%80%BB%E7%BB%93/#more">Read On »</a>
</div>
</div>
</article>
</li>
<li>
<article class='ListView'>
<header class="title">
<h1>
<a href="/blog/2023/02/19/%E7%BD%91%E7%BB%9C%E7%9B%B8%E5%85%B3%E7%9F%A5%E8%AF%86%E6%80%BB%E7%BB%93/">网络相关知识总结</a>
</h1>
<div class='ListMeta'>
<time datetime="2023-02-19T06:35:45.000Z" itemprop="datePublished">
2023-02-19
</time>
/
<ul>
<li class="meta-text">
{ <a href="/blog/categories/Notebook/">Notebook</a> }
</li>
</ul>
</div>
</header>
<div>
<p>网络有关的常见知识点总结</p>
<div class="more-link">
<a href="/blog/2023/02/19/%E7%BD%91%E7%BB%9C%E7%9B%B8%E5%85%B3%E7%9F%A5%E8%AF%86%E6%80%BB%E7%BB%93/#more">Read On »</a>
</div>
</div>
</article>
</li>
<li>
<article class='ListView'>
<header class="title">
<h1>
<a href="/blog/2021/11/30/Hadoop%E4%B9%8BMapReduce%E4%BB%8B%E7%BB%8D/">Hadoop之MapReduce介绍</a>
</h1>
<div class='ListMeta'>
<time datetime="2021-11-30T08:26:19.000Z" itemprop="datePublished">
2021-11-30
</time>
/
<ul>
<li class="meta-text">
{ <a href="/blog/categories/BigData/">BigData</a> }
</li>
<li class="meta-text">
{ <a href="/blog/categories/BigData/Hadoop/">Hadoop</a> }
</li>
</ul>
</div>
</header>
<div>
<p>MapReduce介绍</p>
<div class="more-link">
<a href="/blog/2021/11/30/Hadoop%E4%B9%8BMapReduce%E4%BB%8B%E7%BB%8D/#more">Read On »</a>
</div>
</div>
</article>
</li>
<li>
<article class='ListView'>
<header class="title">
<h1>
<a href="/blog/2021/11/11/Hadoop%E4%B9%8BHdfs/">Hadoop之Hdfs</a>
</h1>
<div class='ListMeta'>
<time datetime="2021-11-11T06:29:13.000Z" itemprop="datePublished">
2021-11-11
</time>
/
<ul>
<li class="meta-text">
{ <a href="/blog/categories/BigData/">BigData</a> }
</li>
<li class="meta-text">
{ <a href="/blog/categories/BigData/Hadoop/">Hadoop</a> }
</li>
</ul>
</div>
</header>
<div>
<p>Hdfs介绍</p>
<div class="more-link">
<a href="/blog/2021/11/11/Hadoop%E4%B9%8BHdfs/#more">Read On »</a>
</div>
</div>
</article>
</li>
<li>
<article class='ListView'>
<header class="title">
<h1>
<a href="/blog/2021/09/08/Spark%E9%87%8D%E6%96%B0%E5%88%86%E5%8C%BARepartition/">Spark重新分区Repartition</a>
</h1>
<div class='ListMeta'>
<time datetime="2021-09-08T03:11:46.000Z" itemprop="datePublished">
2021-09-08
</time>
/
<ul>
<li class="meta-text">
{ <a href="/blog/categories/BigData/">BigData</a> }
</li>
<li class="meta-text">
{ <a href="/blog/categories/BigData/Spark/">Spark</a> }
</li>
<li class="meta-text">
{ <a href="/blog/categories/BigData/Spark/%E8%AF%91/">译</a> }
</li>
</ul>
</div>
</header>
<div>
<p>在分布式环境中，数据合理分布是提高性能的关键因素。在SparkSQL的DataFrame API中有一个*repartition()*函数用于控制数据在Spark集群上分布。然而高效地使用这个函数并不容易因为改变数据分布就意味着集群节点间物理数据移动（即Shuffle）的损耗。</p>
<div class="more-link">
<a href="/blog/2021/09/08/Spark%E9%87%8D%E6%96%B0%E5%88%86%E5%8C%BARepartition/#more">Read On »</a>
</div>
</div>
</article>
</li>
<li>
<article class='ListView'>
<header class="title">
<h1>
<a href="/blog/2021/09/06/Spark%E7%9B%B8%E5%85%B3%E7%9F%A5%E8%AF%86/">Spark相关知识</a>
</h1>
<div class='ListMeta'>
<time datetime="2021-09-06T10:41:08.000Z" itemprop="datePublished">
2021-09-06
</time>
/
<ul>
<li class="meta-text">
{ <a href="/blog/categories/BigData/">BigData</a> }
</li>
<li class="meta-text">
{ <a href="/blog/categories/BigData/Spark/">Spark</a> }
</li>
</ul>
</div>
</header>
<div>
<p>Spark相关知识总结</p>
<div class="more-link">
<a href="/blog/2021/09/06/Spark%E7%9B%B8%E5%85%B3%E7%9F%A5%E8%AF%86/#more">Read On »</a>
</div>
</div>
</article>
</li>
<li>
<article class='ListView'>
<header class="title">
<h1>
<a href="/blog/2021/08/05/Presto%E4%BB%8B%E7%BB%8D/">Presto介绍</a>
</h1>
<div class='ListMeta'>
<time datetime="2021-08-05T09:17:49.000Z" itemprop="datePublished">
2021-08-05
</time>
/
<ul>
<li class="meta-text">
{ <a href="/blog/categories/BigData/">BigData</a> }
</li>
<li class="meta-text">
{ <a href="/blog/categories/BigData/Presto/">Presto</a> }
</li>
</ul>
</div>
</header>
<div>
<p><a target="_blank" rel="noopener" href="https://aws.amazon.com/cn/big-data/what-is-presto/">转载</a> </p>
<h3 id="什么是Presto"><a href="#什么是Presto" class="headerlink" title="什么是Presto"></a>什么是Presto</h3><p>Presto（或 PrestoDB）是一种开源的分布式 SQL 查询引擎，从头开始设计用于针对任何规模的数据进行快速分析查询。它既可支持非关系数据源，例如 Hadoop 分布式文件系统 (HDFS)、<a target="_blank" rel="noopener" href="https://aws.amazon.com/s3/">Amazon S3</a>、Cassandra、MongoDB 和 <a target="_blank" rel="noopener" href="https://aws.amazon.com/emr/details/hbase/">HBase</a>，又可支持关系数据源，例如 MySQL、PostgreSQL、<a target="_blank" rel="noopener" href="https://aws.amazon.com/redshift/">Amazon Redshift</a>、Microsoft SQL Server 和 Teradata。</p>
<div class="more-link">
<a href="/blog/2021/08/05/Presto%E4%BB%8B%E7%BB%8D/#more">Read On »</a>
</div>
</div>
</article>
</li>
<li>
<article class='ListView'>
<header class="title">
<h1>
<a href="/blog/2021/07/26/Elasticsearch%E8%BF%91%E5%AE%9E%E6%97%B6%E6%90%9C%E7%B4%A2%E4%B8%8ETranslog/">Elasticsearch近实时搜索与Translog</a>
</h1>
<div class='ListMeta'>
<time datetime="2021-07-26T07:39:11.000Z" itemprop="datePublished">
2021-07-26
</time>
/
<ul>
<li class="meta-text">
{ <a href="/blog/categories/BigData/">BigData</a> }
</li>
<li class="meta-text">
{ <a href="/blog/categories/BigData/Elasticsearch/">Elasticsearch</a> }
</li>
</ul>
</div>
</header>
<div>
<p>Elasticsearch基于Lucene，Lucene搜索是按segment进行的，每一个segment本身就是一个倒排索引，一个Lucene倒排索引包含segment集合和一个提交点（是一个列出了所有已知segment的文件）。新的文档首先被添加到内存的lucene索引缓存中，然后写入到一个基于磁盘的segment，在一次提交后，一个新的segment被添加到提交点并且清空缓存。</p>
<div class="more-link">
<a href="/blog/2021/07/26/Elasticsearch%E8%BF%91%E5%AE%9E%E6%97%B6%E6%90%9C%E7%B4%A2%E4%B8%8ETranslog/#more">Read On »</a>
</div>
</div>
</article>
</li>
</ul>
<section id="nav-wrapper">
<nav id="page-nav">
<span class="page-number current">1</span><a class="page-number" href="/blog/page/2/">2</a><a class="page-number" href="/blog/page/3/">3</a><a class="extend next" rel="next" href="/blog/page/2/">next »</a>
</nav>
</section>
<footer>
<div>© 2023 - Levi </div>
<div>
<span>
<!-- Powered by <a target="_blank" rel="noopener" href="https://hexo.io">Hexo</a>-->
Homo sum, humani nihil a me alienum puto
</span>
</div>
<!-- {% if theme.footer.counter %}-->
<script async src="//busuanzi.ibruce.info/busuanzi/2.3/busuanzi.pure.mini.js"></script>
<span id="busuanzi_container_site_pv">Views <span id="busuanzi_value_site_pv"></span> </span>
<span class="post-meta-divider">|</span>
<span id="busuanzi_container_site_uv">Visitors <span id="busuanzi_value_site_uv"></span> </span>
<!-- {% endif %}-->
</footer>
</div>
</div>
</div>
<script src="/blog/js/pager/dist/singlepager.js"></script>
<script>
var sp = new Pager('data-pager-shell')
</script>
</body>
</html>