Posts in 2021
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Most votes on apache-spark questions 2
May 01, 2021 in FAQ
Most votes on apache-spark questions 2. #11 How to stop INFO messages displaying on spark console? #12 Spark performance for Scala vs Python #13 (Why) do we need to call cache or persist on a RDD #14 How to read multiple text files into a single RDD? #15 Add jars to a Spark Job - spark-submit #16 How to select the first row of each group? #17 How can I change column types in Spark SQL's DataFrame? #18 How to turn off INFO logging in Spark? #19 How to sort by column in descending order in Spark SQL? #20 How to add a constant column in a Spark DataFrame?
Read all the top votes questions and answers in a single page. #11: How to stop INFO messages displaying on spark console? (Score: 194) Created: 2015-01-05 Last updated: 2018-10-31 Tags: apache-spark, log4j, spark-submit I’d like to stop …
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Most votes on apache-spark questions 10
May 01, 2021 in FAQ
Most votes on apache-spark questions 10. #91 Errors when using OFF_HEAP Storage with Spark 1.4.0 and Tachyon 0.6.4 #92 How do I skip a header from CSV files in Spark? #93 Querying Spark SQL DataFrame with complex types #94 Cannot find col function in pyspark #95 Write to multiple outputs by key Spark - one Spark job #96 How to fix 'TypeError: an integer is required (got type bytes)' error when trying to run pyspark after installing spark 2.4.4 #97 How does createOrReplaceTempView work in Spark? #98 Pyspark: Split multiple array columns into rows #99 Pyspark: Exception: Java gateway process exited before sending the driver its port number #100 Spark Driver in Apache spark
Read all the top votes questions and answers in a single page. #91: Errors when using OFF_HEAP Storage with Spark 1.4.0 and Tachyon 0.6.4 (Score: 70) Created: 2015-05-06 Last updated: 2018-10-06 Tags: apache-spark, apache-spark-sql, alluxio I am …
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Most votes on apache-spark questions 1
May 01, 2021 in FAQ
Most votes on apache-spark questions 1. #1 Spark - repartition() vs coalesce() #2 Difference between DataFrame, Dataset, and RDD in Spark #3 What is the difference between map and flatMap and a good use case for each? #4 Spark java.lang.OutOfMemoryError: Java heap space #5 How to show full column content in a Spark Dataframe? #6 What are workers, executors, cores in Spark Standalone cluster? #7 How to change dataframe column names in pyspark? #8 Task not serializable: java.io.NotSerializableException when calling function outside closure only on classes not objects #9 What is the difference between cache and persist? #10 Apache Spark: The number of cores vs. the number of executors
Read all the top votes questions and answers in a single page. #1: Spark - repartition() vs coalesce() (Score: 316) Created: 2015-07-24 Last updated: 2020-02-21 Tags: apache-spark, distributed-computing, rdd According to Learning Spark Keep in mind …
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Most votes on apache questions 9
May 01, 2021 in FAQ
Most votes on apache questions 9. #81 How can I convert a PFX certificate file for use with Apache on a linux server? #82 deny directory listing with htaccess #83 index.php not loading by default #84 Setting environment variables for accessing in PHP when using Apache #85 Windows: XAMPP vs WampServer vs EasyPHP vs alternative #86 Vagrant's port forwarding not working #87 Remove .php extension with .htaccess #88 What is mod_php? #89 apache to tomcat: mod_jk vs mod_proxy #90 WebSockets and Apache proxy : how to configure mod_proxy_wstunnel?
Read all the top votes questions and answers in a single page. #81: How can I convert a PFX certificate file for use with Apache on a linux server? (Score: 114) Created: 2012-01-08 Tags: apache, ssl How can I convert a PFX certificate file for use …
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Most votes on apache questions 8
May 01, 2021 in FAQ
Most votes on apache questions 8. #71 How to check what user php is running as? #72 Hidden features of mod_rewrite #73 Error in exception handler. - Laravel #74 How to change port number for apache in WAMP #75 Apache shows PHP code instead of executing it #76 How to debug .htaccess RewriteRule not working #77 error_log per Virtual Host? #78 www-data permissions? #79 Apache Prefork vs Worker MPM #80 What exactly is a pre-fork web server model?
Read all the top votes questions and answers in a single page. #71: How to check what user php is running as? (Score: 122) Created: 2011-10-14 Last updated: 2012-07-26 Tags: php, apache I need to detect if php is running as nobody. How do I do this? …
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Most votes on apache questions 7
May 01, 2021 in FAQ
Most votes on apache questions 7. #61 deny direct access to a folder and file by htaccess #62 Understanding Apache's access log #63 Does PHP have threading? #64 Error during SSL Handshake with remote server #65 WAMP/XAMPP is responding very slow over localhost #66 Internal Error 500 Apache, but nothing in the logs? #67 How to change XAMPP apache server port? #68 How to enable local network users to access my WAMP sites? #69 Apache VirtualHost 403 Forbidden #70 Laravel blank white screen
Read all the top votes questions and answers in a single page. #61: deny direct access to a folder and file by htaccess (Score: 136) Created: 2012-02-14 Last updated: 2014-01-03 Tags: php, regex, apache, .htaccess, mod-rewrite Here is the scenario: …
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Most votes on apache questions 6
May 01, 2021 in FAQ
Most votes on apache questions 6. #51 Deny access to one specific folder in .htaccess #52 How to prevent http file caching in Apache httpd (MAMP) #53 Chrome net::ERR_INCOMPLETE_CHUNKED_ENCODING error #54 Switch php versions on commandline ubuntu 16.04 #55 How to debug an apache virtual host configuration? #56 .htaccess not working apache #57 Django stops working with RuntimeError: populate() isn't reentrant #58 How to change the default encoding to UTF-8 for Apache? #59 How can I force users to access my page over HTTPS instead of HTTP? #60 Do I need to convert .CER to .CRT for Apache SSL certificates? If so, how?
Read all the top votes questions and answers in a single page. #51: Deny access to one specific folder in .htaccess (Score: 149) Created: 2013-10-01 Last updated: 2019-07-20 Tags: apache, .htaccess I’m trying to deny users from accessing the …
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Most votes on apache questions 5
May 01, 2021 in FAQ
Most votes on apache questions 5. #41 Accessing localhost (xampp) from another computer over LAN network - how to? #42 How to prevent browser page caching in Rails #43 Can I Replace Apache with Node.js? #44 Why would $_FILES be empty when uploading files to PHP? #45 How can I make PHP display the error instead of giving me 500 Internal Server Error #46 How Python web frameworks, WSGI and CGI fit together #47 Apache: client denied by server configuration #48 Unable to find the wrapper "https" - did you forget to enable it when you configured PHP? #49 How to check if mod_rewrite is enabled in php? #50 Reference: mod_rewrite, URL rewriting and "pretty links" explained
Read all the top votes questions and answers in a single page. #41: Accessing localhost (xampp) from another computer over LAN network - how to? (Score: 164) Created: 2011-04-02 Last updated: 2019-01-20 Tags: apache, xampp, localhost, …
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Most votes on apache questions 4
May 01, 2021 in FAQ
Most votes on apache questions 4. #31 MAMP Pro 3.05 on Mavericks updated to Yosemite - Apache does not start #32 How can I install Apache Ant on Mac OS X? #33 How to Set AllowOverride all #34 httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName #35 Only variable references should be returned by reference - Codeigniter #36 PHP $_SERVER['HTTP_HOST'] vs. $_SERVER['SERVER_NAME'], am I understanding the man pages correctly? #37 How do you redirect HTTPS to HTTP? #38 PHP Fatal error: Call to undefined function json_decode() #39 Adding VirtualHost fails: Access Forbidden Error 403 (XAMPP) (Windows 7) #40 Apache redirect to another port
Read all the top votes questions and answers in a single page. #31: MAMP Pro 3.05 on Mavericks updated to Yosemite - Apache does not start (Score: 183) Created: 2014-08-05 Tags: macos, apache, osx-mavericks, mamp, mamp-pro I have been running MAMP …
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Most votes on apache questions 3
May 01, 2021 in FAQ
Most votes on apache questions 3. #21 ssl_error_rx_record_too_long and Apache SSL #22 How do I change the root directory of an Apache server? #23 apache redirect from non www to www #24 Apache Proxy: No protocol handler was valid #25 Why use deflate instead of gzip for text files served by Apache? #26 ab load testing #27 How do I allow HTTPS for Apache on localhost? #28 XAMPP - Port 80 in use by "Unable to open process" with PID 4! 12 #29 How to automatically redirect HTTP to HTTPS on Apache servers? #30 How to debug Apache mod_rewrite
Read all the top votes questions and answers in a single page. #21: ssl_error_rx_record_too_long and Apache SSL (Score: 256) Created: 2008-09-23 Last updated: 2014-10-16 Tags: apache, configuration, ssl, webserver, mod-ssl I’ve got a customer …