[SOLR-9760] solr.cmd on Windows requires modify permissions in the current directory

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 6.3
• Fix Version/s: 6.4, 7.0
• Component/s: Server

Environment

Windows

• Assignee: Mikhail Khludnev
• Reporter: Alex Crome
• Created: 14/Nov/16 18:24
• Updated: 08/Jun/19 15:28
• Resolved: 21/Dec/16 12:01

Description

Currently starting solr fails if the user does not have permission to write to the current directory. This is caused by the resolve_java_vendor function writing a temporary file to the current directory (javares).

:resolve_java_vendor
set "JAVA_VENDOR=Oracle"
"%JAVA%" -version 2>&1 | findstr /i "IBM J9" > javares
set /p JAVA_VENDOR_OUT=<javares
del javares
if NOT "%JAVA_VENDOR_OUT%" == "" (
  set "JAVA_VENDOR=IBM J9"
)

Rather than writing this temporary file to disk, The exit code of findstr can be used to determine if there is a match. (0 == match, 1 == no match, 2 == syntax error)

:resolve_java_vendor
"%JAVA%" -version 2>&1 | findstr /i "IBM J9" > nul
if %ERRORLEVEL% == 1 set "JAVA_VENDOR=Oracle" else set "JAVA_VENDOR=IBM J9"

By not writing this temp file, you can reduce the permissions solr needs. As a work around until this is fixed, you can start solr in a directory that has the required permissions,

Issue Links

• links to: GitHub Pull Request #113