Description
If initialization is failed, DelimitedTextFileAppender should check null condition
org.apache.tajo.storage.exception.AlreadyExistsStorageException: Error: hdfs://localhost:46021/tmp/tajo-travis/staging/q_1441719763556_0020/RESULT/part-01-000000-000 alreay exists at org.apache.tajo.storage.text.DelimitedTextFile$DelimitedTextFileAppender.init(DelimitedTextFile.java:160) at org.apache.tajo.engine.planner.physical.StoreTableExec.openNewFile(StoreTableExec.java:119) at org.apache.tajo.engine.planner.physical.StoreTableExec.init(StoreTableExec.java:79) at org.apache.tajo.worker.TaskImpl.run(TaskImpl.java:401) at org.apache.tajo.worker.TaskContainer.run(TaskContainer.java:65) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) 2015-09-08 13:43:27,432 ERROR: org.apache.tajo.worker.TaskContainer (run(70)) - java.lang.NullPointerException at org.apache.tajo.storage.text.DelimitedTextFile$DelimitedTextFileAppender.flushBuffer(DelimitedTextFile.java:208) at org.apache.tajo.storage.text.DelimitedTextFile$DelimitedTextFileAppender.flush(DelimitedTextFile.java:222) at org.apache.tajo.engine.planner.physical.StoreTableExec.close(StoreTableExec.java:152) at org.apache.tajo.worker.TaskImpl.run(TaskImpl.java:414) at org.apache.tajo.worker.TaskContainer.run(TaskContainer.java:65) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) 2015-09-08 13:43:27,433 ERROR: org.apache.tajo.querymaster.TaskAttempt (transition(438)) - ta_1441719763556_0020_000001_000000_02 FROM localhost >> No error message