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introduce interning of internal files names in SmooshedFileMapper (#10295)

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Himanshu 2020-08-21 17:37:49 -07:00 committed by GitHub
parent 0910d22f48
commit a607e9e7ff
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1 changed files with 5 additions and 1 deletions
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6
core/src/main/java/org/apache/druid/java/util/common/io/smoosh/SmooshedFileMapper.java
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@ -19,6 +19,8 @@
package org.apache.druid.java.util.common.io.smoosh;
import com.google.common.collect.Interner;
import com.google.common.collect.Interners;
import com.google.common.collect.Lists;
import com.google.common.io.Closeables;
import com.google.common.io.Files;
@ -46,6 +48,8 @@ import java.util.TreeMap;
*/
public class SmooshedFileMapper implements Closeable
{
private static final Interner<String> STRING_INTERNER = Interners.newWeakInterner();
public static SmooshedFileMapper load(File baseDir) throws IOException
{
File metaFile = FileSmoosher.metaFile(baseDir);
@ -81,7 +85,7 @@ public class SmooshedFileMapper implements Closeable
throw new ISE("Wrong number of splits[%d] in line[%s]", splits.length, line);
}
internalFiles.put(
splits[0],
STRING_INTERNER.intern(splits[0]),
new Metadata(Integer.parseInt(splits[1]), Integer.parseInt(splits[2]), Integer.parseInt(splits[3]))
);
}