title: JNI ERROR (app bug): local reference table overflow (max=512)
body: <p>I am trying to run the <a href="https://github.com/spencerimp/LibsvmAndroidClassification">LibSVMAndroidClassification</a> Android project with my own dataset. It works perfectly fine with the dataset already provided and it also works fine when I use my csv with 100 rows (which is less than 1% of original size). But when I try to go for "Train CSV" with for e.g 1000 rows then I see this error. I even tried to set android:largeHeap="true" in Manifest.xml but nothing improved. </p>
  
  <p>This is my logcat dump.</p>
  
  <pre><code>10-31 17:49:06.745: E/dalvikvm(2008): JNI ERROR (app bug): local reference table overflow (max=512)
  10-31 17:49:06.745: W/dalvikvm(2008): JNI local reference table (0x754057e0) dump:
  10-31 17:49:06.745: W/dalvikvm(2008): Last 10 entries (of 512):
  10-31 17:49:06.745: W/dalvikvm(2008): 511: 0x42d900b0 double
  10-31 17:49:06.745: W/dalvikvm(2008): 510: 0x42a19698 int
  10-31 17:49:06.745: W/dalvikvm(2008): 509: 0x42d8ff78 double
  10-31 17:49:06.745: W/dalvikvm(2008): 508: 0x42a195f0 int
  10-31 17:49:06.745: W/dalvikvm(2008): 507: 0x42d8fe40 double
  10-31 17:49:06.745: W/dalvikvm(2008): 506: 0x42a19548 int
  10-31 17:49:06.745: W/dalvikvm(2008): 505: 0x42d8fd08 double
  10-31 17:49:06.745: W/dalvikvm(2008): 504: 0x42a194a0 int
  10-31 17:49:06.745: W/dalvikvm(2008): 503: 0x42d8fbd0 double
  10-31 17:49:06.745: W/dalvikvm(2008): 502: 0x42a193f8 int
  10-31 17:49:06.745: W/dalvikvm(2008): Summary:
  10-31 17:49:06.745: W/dalvikvm(2008): 5 of java.lang.Class (4 unique instances)
  10-31 17:49:06.745: W/dalvikvm(2008): 3 of java.lang.String (3 unique instances)
  10-31 17:49:06.745: W/dalvikvm(2008): 249 of int (249 unique instances)
  10-31 17:49:06.745: W/dalvikvm(2008): 1 of int
  10-31 17:49:06.745: W/dalvikvm(2008): 250 of double (250 unique instances)
  10-31 17:49:06.745: W/dalvikvm(2008): 1 of java.lang.String
  10-31 17:49:06.745: W/dalvikvm(2008): 1 of int[]
  10-31 17:49:06.745: W/dalvikvm(2008): 1 of edu.sinica.citi.mac.android.actclassification.ActClassificationActivity
  10-31 17:49:06.745: W/dalvikvm(2008): 1 of double[]
  10-31 17:49:06.745: E/dalvikvm(2008): Failed adding to JNI local ref table (has 512 entries)
  10-31 17:49:06.745: I/dalvikvm(2008): "main" prio=5 tid=1 RUNNABLE
  10-31 17:49:06.745: I/dalvikvm(2008): | group="main" sCount=0 dsCount=0 obj=0x42027710 self=0x420115f0
  10-31 17:49:06.745: I/dalvikvm(2008): | sysTid=2008 nice=0 sched=0/0 cgrp=apps handle=1074106620
  10-31 17:49:06.745: I/dalvikvm(2008): | state=R schedstat=( 774483646 137982240 4930 ) utm=59 stm=18 core=1
  10-31 17:49:06.745: I/dalvikvm(2008): at edu.sinica.citi.mac.android.actclassification.ActClassificationActivity.svmtrain(Native Method)
  10-31 17:49:06.745: I/dalvikvm(2008): at edu.sinica.citi.mac.android.actclassification.ActClassificationActivity.train_csv(ActClassificationActivity.java:329)
  10-31 17:49:06.745: I/dalvikvm(2008): at edu.sinica.citi.mac.android.actclassification.ActClassificationActivity$2.onClick(ActClassificationActivity.java:125)
  10-31 17:49:06.745: I/dalvikvm(2008): at android.view.View.performClick(View.java:4249)
  10-31 17:49:06.745: I/dalvikvm(2008): at android.view.View$PerformClick.run(View.java:17764)
  10-31 17:49:06.745: I/dalvikvm(2008): at android.os.Handler.handleCallback(Handler.java:730)
  10-31 17:49:06.745: I/dalvikvm(2008): at android.os.Handler.dispatchMessage(Handler.java:92)
  10-31 17:49:06.745: I/dalvikvm(2008): at android.os.Looper.loop(Looper.java:137)
  10-31 17:49:06.745: I/dalvikvm(2008): at android.app.ActivityThread.main(ActivityThread.java:5137)
  10-31 17:49:06.745: I/dalvikvm(2008): at java.lang.reflect.Method.invokeNative(Native Method)
  10-31 17:49:06.745: I/dalvikvm(2008): at java.lang.reflect.Method.invoke(Method.java:525)
  10-31 17:49:06.745: I/dalvikvm(2008): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:752)
  10-31 17:49:06.745: I/dalvikvm(2008): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:568)
  10-31 17:49:06.745: I/dalvikvm(2008): at miui.dexspy.DexspyInstaller.main(DexspyInstaller.java:171)
  10-31 17:49:06.745: I/dalvikvm(2008): at dalvik.system.NativeStart.main(Native Method)
  10-31 17:49:06.745: E/dalvikvm(2008): VM aborting
  10-31 17:49:06.745: A/libc(2008): Fatal signal 11 (SIGSEGV) at 0xdeadd00d (code=1), thread 2008 (tclassification)
  </code></pre>
  
  <p>I have googled a lot but still I am unable to understand the background and reason behind this. Many people have faced this same error in different situations. What can be a suitable pointer to the solution ?</p>
  
  <p>Thanks in advance !</p>