fix FileUtils performance regression due to FilterOutputStream (#8024)

2019-07-04 08:41:17 -07:00 · 2019-07-04 08:41:17 -07:00 · 6760505a7e
parent e6ba258197
commit 6760505a7e
1 changed files with 8 additions and 0 deletions
--- a/core/src/main/java/org/apache/druid/java/util/common/FileUtils.java
+++ b/core/src/main/java/org/apache/druid/java/util/common/FileUtils.java
@ -242,6 +242,14 @@ public class FileUtils
  {
    return new FilterOutputStream(out)
    {
+      // Default implementation of this method in FilterOutputStream converts single write operation to
+      // multiple write operations of 1 byte each, which is terribly inefficient.
+      @Override
+      public void write(byte b[], int off, int len) throws IOException
+      {
+        out.write(b, off, len);
+      }
+
      @Override
      public void close()
      {