Sadayuki Furuhashi frsyuki
frsyuki
/ figure1.png
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August 29, 2015 13:56
frsyuki
/ DeserBenchmark.java
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August 29, 2015 14:00
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| import java.util.Random; | |
| import sun.misc.Unsafe; | |
| import sun.nio.ch.DirectBuffer; | |
| import java.lang.reflect.Field; | |
| import java.nio.ByteBuffer; | |
| import java.io.File; | |
| import java.io.FileOutputStream; | |
| import java.io.IOException; |
frsyuki
/ msgpack-v07-unpacker-design-doc.java
Created
May 4, 2014 03:54
View msgpack-v07-unpacker-design-doc.java
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| public interface XyzInput { | |
| public Buffer getNextBuffer() throws IOException; | |
| } | |
| // non-reference counter | |
| public abstract class Buffer { | |
| private Unsafe unsafe; | |
| private long pointer; | |
| private Object base; |
View DeserBenchmark.java
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| import java.util.Random; | |
| import sun.misc.Unsafe; | |
| import sun.nio.ch.DirectBuffer; | |
| import java.lang.reflect.Field; | |
| import java.nio.ByteBuffer; | |
| import java.io.File; | |
| import java.io.FileOutputStream; | |
| import java.io.IOException; |
View Makefile
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| all: run | |
| MSGPACK_06_JAR = msgpack-java-0.6.11.jar | |
| $(MSGPACK_06_JAR): | |
| curl "http://search.maven.org/remotecontent?filepath=org/msgpack/msgpack/0.6.11/msgpack-0.6.11.jar" -o $@ | |
| JAVASSIST_JAR = javassist-3.18.2-GA.jar | |
| $(JAVASSIST_JAR): | |
| curl "http://search.maven.org/remotecontent?filepath=org/javassist/javassist/3.18.2-GA/javassist-3.18.2-GA.jar" -o $@ |
frsyuki
/ presto-1441.md
Last active
August 29, 2015 14:03
frsyuki
/ gist:e73c89db36c2069a7589
Created
July 15, 2014 06:23
View gist:e73c89db36c2069a7589
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| Add workaround for a deadlock issue of Class.getAnnotation() (JDK-7122142) | |
| diff --git a/ql/src/java/org/apache/hadoop/hive/ql/exec/FunctionRegistry.java b/ql/src/java/org/apache/hadoop/hive/ql/exec/FunctionRegistry.java | |
| index a80feb9..c92b4f6 100644 | |
| --- a/ql/src/java/org/apache/hadoop/hive/ql/exec/FunctionRegistry.java | |
| +++ b/ql/src/java/org/apache/hadoop/hive/ql/exec/FunctionRegistry.java | |
| @@ -1613,16 +1613,20 @@ public static boolean isDeterministic(GenericUDF genericUDF) { | |
| // the deterministic annotation declares | |
| return false; | |
| } |
frsyuki
/ gist:12271f0fe2b02535202d
Created
July 16, 2014 06:15
View gist:12271f0fe2b02535202d
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| "main" prio=10 tid=0x00007f0fd800e800 nid=0x934a runnable [0x00007f0fdec8f000] | |
| java.lang.Thread.State: RUNNABLE | |
| at java.lang.Class.initAnnotationsIfNecessary(Class.java:3067) | |
| - locked <0x000000009e5c7f70> (a java.lang.Class for org.apache.hadoop.hive.ql.udf.generic.GenericUDFBridge) | |
| at java.lang.Class.getAnnotation(Class.java:3029) | |
| at org.apache.hadoop.hive.ql.exec.FunctionRegistry.isStateful(FunctionRegistry.java:1186) | |
| at org.apache.hadoop.hive.ql.exec.FunctionRegistry.isDeterministic(FunctionRegistry.java:1161) | |
| at org.apache.hadoop.hive.ql.exec.ExprNodeGenericFuncEvaluator.isDeterministic(ExprNodeGenericFuncEvaluator.java:143) | |
| at org.apache.hadoop.hive.ql.exec.ExprNodeGenericFuncEvaluator.evaluate(ExprNodeGenericFuncEvaluator.java:153) | |
| at org.apache.hadoop.hive.ql.exec.ExprNodeGenericFuncEvaluator$DeferredExprObject.get(ExprNodeGenericFuncEvaluator.java:64) |
frsyuki
/ java-socketread0-hang-bug.txt
Created
July 25, 2014 01:38
View java-socketread0-hang-bug.txt
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| Reading data from a socket hangs for at least 1 hour even if I set Socket.setSoTimeout to non-0 value. It happens very rarely (once a month under 100 or more connections in parallel with continuously 10MB/s or more data transfer). | |
| Although it rarely happens, it leads significant impact to applications if it happens. | |
| When it hanged, thread dump includes following stack trace: | |
| ---- | |
| "pool-3-thread-6" prio=10 tid=0x00007fd43006e800 nid=0xdf23 runnable [0x00007fd424e56000] | |
| java.lang.Thread.State: RUNNABLE | |
| at java.net.SocketInputStream.socketRead0(Native Method) |
frsyuki
/ ruby-struct-init.rb
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August 29, 2015 14:04
View ruby-struct-init.rb
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| require 'benchmark' | |
| LOOP = 500000 | |
| NKEYS = 20 | |
| vals = (0..NKEYS).map {|i| "val#{i}" } | |
| keys = (0..NKEYS).map {|i| "col#{i}" } | |
| S = Struct.new(*keys.map {|k| k.to_sym }) |
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