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From "ASF GitHub Bot (Jira)" <j...@apache.org>
Subject [jira] [Commented] (NUTCH-1863) Add JSON format dump output to readdb command
Date Sun, 22 Dec 2019 15:55:00 GMT

    [ https://issues.apache.org/jira/browse/NUTCH-1863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17001954#comment-17001954
] 

ASF GitHub Bot commented on NUTCH-1863:
---------------------------------------

sebastian-nagel commented on pull request #490: Fix for NUTCH-1863: Add JSON format dump output
to readdb command
URL: https://github.com/apache/nutch/pull/490#discussion_r360708465
 
 

 ##########
 File path: src/java/org/apache/nutch/crawl/CrawlDbReader.java
 ##########
 @@ -879,35 +960,37 @@ public void processTopNJob(String crawlDb, long topN, float min,
 
   }
 
-
-  public int run(String[] args) throws IOException, InterruptedException, ClassNotFoundException,
Exception {
+  public int run(String[] args) throws IOException, InterruptedException,
+      ClassNotFoundException, Exception {
     @SuppressWarnings("resource")
     CrawlDbReader dbr = new CrawlDbReader();
 
     if (args.length < 2) {
-      System.err
-          .println("Usage: CrawlDbReader <crawldb> (-stats | -dump <out_dir>
| -topN <nnnn> <out_dir> [<min>] | -url <url>)");
+      System.err.println(
+          "Usage: CrawlDbReader <crawldb> (-stats | -dump <out_dir> | -topN <nnnn>
<out_dir> [<min>] | -url <url>)");
       System.err
           .println("\t<crawldb>\tdirectory name where crawldb is located");
       System.err
           .println("\t-stats [-sort] \tprint overall statistics to System.out");
       System.err.println("\t\t[-sort]\tlist status sorted by host");
-      System.err
-          .println("\t-dump <out_dir> [-format normal|csv|crawldb]\tdump the whole
db to a text file in <out_dir>");
+      System.err.println(
+          "\t-dump <out_dir> [-format normal|csv|crawldb]\tdump the whole db to a text
file in <out_dir>");
 
 Review comment:
   Should also list the new JSON format: `-format ...|json` in the command-line help...
 
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> Add JSON format dump output to readdb command
> ---------------------------------------------
>
>                 Key: NUTCH-1863
>                 URL: https://issues.apache.org/jira/browse/NUTCH-1863
>             Project: Nutch
>          Issue Type: New Feature
>          Components: crawldb
>    Affects Versions: 2.3, 1.10
>            Reporter: Lewis John McGibbney
>            Assignee: Shashanka Balakuntala Srinivasa
>            Priority: Major
>             Fix For: 1.17
>
>
> Opening up the ability for third parties to consume Nutch crawldb data as JSON would
be a poisitive thing IMHO.
> This issue should improve the readdb functionality of both 1.X to enable JSON dumps of
crawldb data.



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