- 1 year ago
HADOOP on WINDOWS error finding hostname $'hostname\r' with start-dfs.sh Name or service not known hostname
The error you encountered suggests that there may be an issue with the hostname configuration on your Windows system when running Hadoop. The start-dfs.sh
script tries to find the hostname using the command hostname
, but it seems to be encountering an error due to the presence of the carriage return character (\r
) in the output.
This issue is often caused by line endings in shell scripts when they are created or modified on different platforms. Windows uses a combination of carriage return (\r
) and line feed (\n
) characters for line endings, whereas Unix-like systems (including Linux and macOS) use only the line feed character (\n
).
To fix this issue, you can try the following solutions:
Use
dos2unix
tool: You can use thedos2unix
utility to convert the line endings of thestart-dfs.sh
script from Windows format to Unix format. This will remove the carriage return characters.sqldos2unix start-dfs.sh
Manually edit the file: If you prefer, you can manually edit the
start-dfs.sh
file and ensure that it has Unix-style line endings (only\n
without\r
).Use
winutils
: If you are using Hadoop on Windows, you might also need to set up thewinutils
utility. Download thewinutils.exe
andhadoop.dll
for the specific Hadoop version you are using and place them in thebin
folder of your Hadoop installation. You can find these files in the official Hadoop release or third-party distributions like the one provided by Microsoft.
After making the necessary changes, try running the start-dfs.sh
script again. The issue should be resolved, and Hadoop should be able to find the hostname correctly.