MD5 checksum on a file in Linux.

Installing MD5SUM package:

$ apt-get update
$ apt-get install coreutils

Generate checksum file
$ md5sum transaction.log > MDSSS

Check the checksum:

$ cat MDSSS
ae43fda27bf612e2d7128c3072220078 transaction.log

Eclipse Indigo Unstable.

Hi All,

I have tried Eclipse Indigo on Red-Hat Linux 64bit. Its unstable and gives me the following Exception over and over again. Therefore, i would recommend moving back to Helios, which is a stable version and i had no problems with it.

Exception in Indigo:
--------------------

LogFilter.isLoggable threw a non-fatal unchecked exception as follows:
java.lang.NullPointerException
at org.eclipse.core.internal.runtime.Log.isLoggable(Log.java:101)
at org.eclipse.equinox.log.internal.ExtendedLogReaderServiceFactory.safeIsLoggable(ExtendedLogReaderServiceFactory.java:57)
at org.eclipse.equinox.log.internal.ExtendedLogReaderServiceFactory.logPrivileged(ExtendedLogReaderServiceFactory.java:158)
at org.eclipse.equinox.log.internal.ExtendedLogReaderServiceFactory.log(ExtendedLogReaderServiceFactory.java:146)
at org.eclipse.equinox.log.internal.ExtendedLogServiceFactory.log(ExtendedLogServiceFactory.java:65)
at org.eclipse.equinox.log.internal.ExtendedLogServiceImpl.log(ExtendedLogServiceImpl.java:87)
at org.eclipse.equinox.log.internal.LoggerImpl.log(LoggerImpl.java:54)
at org.eclipse.core.internal.runtime.Log.log(Log.java:60)
at altagracia.services.eclipse.ExceptionHandler.handle(ExceptionHandler.java:17)
at altagracia.plugin.wizards.Connect.getTableFromAttributes(Connect.java:321)
at altagracia.codegen.unifier.ProcedureSpec.statementSpec(ProcedureSpec.java:962)
at altagracia.codegen.unifier.ProcedureSpec.blockSpec(ProcedureSpec.java:750)
at altagracia.codegen.unifier.ProcedureSpec.generate(ProcedureSpec.java:231)
at altagracia.codegen.unifier.ProcedureSpec.generate(ProcedureSpec.java:165)
at altagracia.plugin.popup.actions.ActionProcedureGeneration.run(ActionProcedureGeneration.java:46)
at org.eclipse.ui.actions.ActionDelegate.runWithEvent(ActionDelegate.java:70)
at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:241)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1258)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3586)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3207)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
at org.eclipse.equinox.launcher.Main.main(Main.java:1386)

mount windows directory to linux

$cd /mnt
$sudo mkdir windrive
$sudo mount -t cifs _windows_drive_path_ -o username=_user-name_,password=_password_ /mnt/windrive/

To see the contents of vdrive:

$ls -la /mnt/windrive

Change author name in eclipse....

1- open eclipse.ini file in the eclipse directory.

2- Abb the following line after -vmargs line

-Duser.name=_Your_name

To what extent is Hadoop used in finance? - Quora

To what extent is Hadoop used in finance? - Quora: "To what extent is Hadoop used in finance?"

Almost every large bank I've spoken with has either a pilot project or a production cluster running.

Some example use cases that come to mind:
IT log consolidation and analysis (for use in provisioning, forensics, etc.)
Collection and analysis of enterprise service bus messages
Identifying transaction fraud: creating a large data set for model building and backtesting
Consolidating consumer product data warehouses and transaction logs to build a unified risk score across consumer products (retail banking, home loans, auto loans, student loans, credit cards, etc.)
Daily transformation of loan-level data delivered from a service provider in a custom format into a consolidated format suitable for loading into a database
Collection and analysis of simulation logs from a multi-thousand node compute grid
Tiered time series tick database (recent data stored in an in-memory column store, older data stored on Hadoop)
Check image storage and retrieval
Daily processing of equity markets data for compliance purposes
Creation of a equity market historical data repository for model fitting and back testing

Joda-Time - Java date and time API - Home

Joda-Time - Java date and time API - Home

A Nice API to deal with Java Time and Date.

Why minus into minus is plus.

someone asked me why minus into minus is plus. Here is my answer:

1 is mathematically not correct. It should either be -1 or +1. When we write 1 it actually means +1.

1-1 means actually (+1) + (-1)

(-1)*(1-1)
= (-1)*[(+1)+(-1)]
= (-1)*(+1)+(-1)(-1)
= (-1)+(+1)
= -1+1 = 0

This means if (-1)*(-1) is not +1, then we can not prove the above. This is logic.

Now let me explain you the philosophy.

+(-1)

Suppose:
+ = same direction as sign
- = opposite direction sign

+(-1) = same direction to - so answer is -1

-(-1) = oppsite direction to - so the answer is +1