Possible memory leak in SerializeTranslatorFactory (Objectify)

[Dexter via StackOverflow]

I ran across a memory leak when saving a huge number of entities (>10000) which have these 2 fields :

@Unindex
@Serialize(zip = true)
private EnumMultiset eventCounter; //event counter
@Unindex
@Serialize(zip = true)
private EnumMap eventOccurrence; //map to hold which event occurred when

The stacktrace :

Error for /worker-module/task/schedule java.lang.OutOfMemoryError at java.util.zip.Deflater.init(Native Method) at java.util.zip.Deflater.(Deflater.java:180) at java.util.zip.Deflater.(Deflater.java:189) at com.googlecode.objectify.impl.translate.SerializeTranslatorFactory$1.saveValue(SerializeTranslatorFactory.java:70)

Complete stacktrace.

My analysis is that the SerializeTranslatorFactory, creates Deflater instance in saveValue() method and does not call end() or alternatively finalize() on it. I took help from this blog. Hence it eventually goes out of memory. Also, since the default deflater is not used, the onClose() of DeflaterOutputStream does not automatically call .end();

public void close() throws IOException {
    if (!closed) {
        finish();
        if (usesDefaultDeflater) //false
            def.end();
        out.close();
        closed = true;
    }
}

Please DO NOT REPLY directly to this email but go to StackOverflow:
http://stackoverflow.com/questions/36265614/possible-memory-leak-in-serializetranslatorfactory-objectify

[Dexter via StackOverflow]

I ran across a memory leak when saving a huge number of entities (>10000) which have these 2 fields :

@Unindex
@Serialize(zip = true)
private EnumMultiset eventCounter; //event counter
@Unindex
@Serialize(zip = true)
private EnumMap eventOccurrence; //map to hold which event occurred when

The stacktrace :

Error for /worker-module/task/schedule java.lang.OutOfMemoryError at java.util.zip.Deflater.init(Native Method) at java.util.zip.Deflater.(Deflater.java:180) at java.util.zip.Deflater.(Deflater.java:189) at com.googlecode.objectify.impl.translate.SerializeTranslatorFactory$1.saveValue(SerializeTranslatorFactory.java:70)

Complete stacktrace.

My analysis is that the SerializeTranslatorFactory, creates Deflater instance in saveValue() method and does not call end() or alternatively finalize() on it. I took help from this blog. Hence it eventually goes out of memory. Also, since the default deflater is not used, the onClose() of DeflaterOutputStream does not automatically call .end();

public void close() throws IOException {
    if (!closed) {
        finish();
        if (usesDefaultDeflater) //false
            def.end();
        out.close();
        closed = true;
    }
}

I have also created an issue for this.

[Dexter via StackOverflow]

I ran across a memory leak when saving a huge number of entities (>10000) which have these 2 fields :

@Unindex
@Serialize(zip = true)
private EnumMultiset<Type> eventCounter; //event counter
@Unindex
@Serialize(zip = true)
private EnumMap<Type, String> eventOccurrence; //map to hold which event occurred when