guiyanakuang commented on a change in pull request #889:
URL: https://github.com/apache/orc/pull/889#discussion_r699462507
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File path: site/_docs/java-tools.md
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@@ -11,43 +11,136 @@ supports both the local file system and HDFS.
The subcommands for the tools are:
- * meta - print the metadata of an ORC file
- * data - print the data of an ORC file
- * scan (since ORC 1.3) - scan the data for benchmarking
* convert (since ORC 1.4) - convert JSON files to ORC
+ * count (since ORC 1.6) - recursively find *.orc and print the number of rows
+ * data - print the data of an ORC file
* json-schema (since ORC 1.4) - determine the schema of JSON documents
+ * key (since ORC 1.5) - print information about the encryption keys
+ * meta - print the metadata of an ORC file
+ * scan (since ORC 1.3) - scan the data for benchmarking
+ * version (since ORC 1.6) - print the version of this ORC tool
The command line looks like:
~~~ shell
% java -jar orc-tools-X.Y.Z-uber.jar <sub-command> <args>
~~~
+## Java Convert
+
+The convert command reads several JSON files and converts them into a
+single ORC file.
+
+-e,--escape `<escape>`
+ : Sets CSV escape character
+
+-h,--help
+ : Print help
+
+-H,--header `<header>`
+ : Sets CSV header lines
+
+-n,--null `<null>`
+ : Sets CSV null string
+
+-o,--output `<filename>`
+ : Sets the output ORC filename, which defaults to output.orc
+
+-O,--overwrite
+ : If the file already exists, it will be overwritten
+
+-q,--quote `<quote>`
+ : Sets CSV quote character
+
+-s,--schema `<schema>`
+ : Sets the schema for the ORC file. By default, the schema is automatically
discovered.
+
+-S,--separator `<separator>`
+ : Sets CSV separator character
+
+-t,--timestampformat `<timestampformat>`
+ : Sets timestamp Format
+
+The automatic JSON schema discovery is equivalent to the json-schema tool
+below.
+
+## Java Count
+
+The count command recursively find *.orc and print the number of rows. The
parameter value can be a space separated file paths string.
Review comment:
I removed this phrase. BTW count command does not give any error if
there is no path. Also I would like to support specifying a single file, not
necessarily a directory.
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