[GitHub] [incubator-druid] yongmeibian opened a new pull request #8956: concurrent access to charsetfix method throws IllegalStateException bugfix

[GitBox <gi...@apache.org>]

yongmeibian opened a new pull request #8956: concurrent access to charsetfix method throws IllegalStateException bugfix
URL: https://github.com/apache/incubator-druid/pull/8956
 
 
   java.nio.charset.CharsetEncoder.canEncode throws IllegalStateException if an encoding 
   
   operation is already in progress.And 
   
   org.apache.druid.java.util.common.parsers.JSONFlattenerMaker has a private final 
   
   CharsetEncoder enc = StandardCharsets.UTF_8.newEncoder() as its member variable and the 
   
   charsetFix() executes  "if (s != null && !enc.canEncode(s))" which makes charsetFix() 
   
   cannot be accessed concurrently either.
   
   Fixed the bug: access  JSONFlattenerMaker charsetFix() concurrently  throws IllegalStateException
   
   
   ##### Key changed/added classes in this PR
   JSONFlattenerMaker
   

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