Move location for temporary VDB execution state from system temp directory to somewhere under designer workspace ---------------------------------------------------------------------------------------------------------------- Key: TEIIDDES-396 URL: https://jira.jboss.org/jira/browse/TEIIDDES-396 Project: Teiid Designer Issue Type: Feature Request Environment: 5.5SP3 0012 Reporter: Greg Haber Assignee: Barry LaFond Priority: Minor Fix For: 7.0 Attachments: JBEDSP1016Exception.txt When you execute a VDB in Designer, it puts some temporary files in the system temp directory (on Linux /tmp), like the VDB indexes. Then it expects those files to be there during the user's execution session. Normally, this is OK, but system temp is not a completely stable place - it is common (on both Windows and Linux) for administrators to periodically clean out this directory. At one time, this cleaning job happened between when the VDB was executed and when the user went to run a query against the VDB, they hit an exception(full text is attached): Caused by: com.metamatrix.api.exception.MetaMatrixComponentException[0]: com.metamatrix.modeler.core.ModelerCoreException[0]: java.io.FileNotFoundException: /tmp/1237418435308_6014702366987474810/runtime-inf/TABLES.INDEX (No such file or directory) at java.io.RandomAccessFile.open(Native Method) at java.io.RandomAccessFile.<init>(RandomAccessFile.java:212) at com.metamatrix.internal.core.index.SafeRandomAccessFile.<init>(SafeRandomAccessFile.java:23) at com.metamatrix.internal.core.index.BlocksIndexInput.open(BlocksIndexInput.java:216) Now, it would be better to write these files to a private temp space for the user. In fact we do this for Server by changing the java.io.tmp system property to $MM_TMP_DIR. For Designer 5.5.x we can do the same (change java.io.tmpdir to a directory under the user's workspace, where we know they can read/write), but looking forward to future releases where Designer will run under existing Eclipse installations, changing java.io.tmpdir for all of Eclipse (or mucking with JVM params in Eclipse so this only is set for VDB execution?) may be a bad idea. Now, I believe (but am not positive) that the location for these temp files is determined by com.metamatrix.core.io.FileUrl, where it uses http://java.sun.com/j2se/1.5.0/docs/api/java/io/File.html#createTempFile(... to get a temp file in the system temp directory. We can easily change code here to instead use http://java.sun.com/j2se/1.5.0/docs/api/java/io/File.html#createTempFile(... to have the temp file created in the directory of our choosing. We may also want to change com.metamatrix.core.io.ZipFileUrl's use of this same method while we're at it.