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Lars Hofhansl commented on PHOENIX-5545: ---------------------------------------- Chatting with [~ckulkarni]... It seems now that we drop main table first (including the HBase table if dropMetadata was requested). Perhaps the flushing of the data table is just no longer needed at all. > DropChildViews Task fails for a base table when its child view has an index > --------------------------------------------------------------------------- > > Key: PHOENIX-5545 > URL: https://issues.apache.org/jira/browse/PHOENIX-5545 > Project: Phoenix > Issue Type: Bug > Affects Versions: 4.15.0, 5.1.0 > Reporter: Chinmay Kulkarni > Assignee: Chinmay Kulkarni > Priority: Major > Fix For: 4.15.0, 5.1.0 > > Attachments: PHOENIX-5545-4.x-HBase-1.3-v1.patch > > Time Spent: 0.5h > Remaining Estimate: 0h > > 1) Start the HBase server with 4.15.0 Phoenix > 2) Connect with a 4.15.0 client > 3) Create a base table and a view on top of the base table and create an > index on top of this view: > {code:sql} > CREATE TABLE IF NOT EXISTS Z_BASE_TABLE (ID INTEGER NOT NULL PRIMARY KEY, > HOST VARCHAR(10), FLAG BOOLEAN); > CREATE VIEW Z_VIEW1 (col1 INTEGER, col2 INTEGER, col3 INTEGER, col4 INTEGER, > col5 INTEGER) AS SELECT * FROM Z_BASE_TABLE WHERE ID>10; > CREATE INDEX V_I ON Z_VIEW1(COL4); > {code} > 4) Drop the base table with the cascade option: > {code:sql} > DROP TABLE Z_BASE_TABLE CASCADE; > {code} > 5) DropChildViewsTask gets added to the SYSTEM.TASK table as expected, but > when it gets scheduled and subsequently executed, it fails with the following > exception: > {code:java} > 2019-10-24 22:44:34,214 ERROR [pool-121-thread-1] tasks.DropChildViewsTask: > Exception while dropping a child view task. null.Z_BASE_TABLE with tenant id > IS NULL and timestamp 292278994-08-16 23:12:55.807 > org.apache.phoenix.exception.PhoenixIOException: Z_BASE_TABLE > at > org.apache.phoenix.query.ConnectionQueryServicesImpl.flushTable(ConnectionQueryServicesImpl.java:4442) > at > org.apache.phoenix.query.ConnectionQueryServicesImpl.flushParentPhysicalTable(ConnectionQueryServicesImpl.java:1922) > at > org.apache.phoenix.query.ConnectionQueryServicesImpl.dropTable(ConnectionQueryServicesImpl.java:1888) > at > org.apache.phoenix.schema.MetaDataClient.dropTable(MetaDataClient.java:3152) > at > org.apache.phoenix.schema.MetaDataClient.dropTable(MetaDataClient.java:3060) > at org.apache.phoenix.util.ViewUtil.dropChildViews(ViewUtil.java:207) > at > org.apache.phoenix.coprocessor.tasks.DropChildViewsTask.run(DropChildViewsTask.java:60) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > at > org.apache.phoenix.coprocessor.TaskRegionObserver$SelfHealingTask.run(TaskRegionObserver.java:204) > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) > at java.lang.Thread.run(Thread.java:748) > Caused by: org.apache.hadoop.hbase.TableNotFoundException: Z_BASE_TABLE > at > org.apache.hadoop.hbase.client.HBaseAdmin.checkTableExists(HBaseAdmin.java:2863) > at org.apache.hadoop.hbase.client.HBaseAdmin.flush(HBaseAdmin.java:1904) > at org.apache.hadoop.hbase.client.HBaseAdmin.flush(HBaseAdmin.java:1949) > at > org.apache.phoenix.query.ConnectionQueryServicesImpl.flushTable(ConnectionQueryServicesImpl.java:4440) > ... 18 more > {code} > Note that this marks the DropChildViews task for the base table as failed and > so *if the base table has any other views, those views will also not be > dropped*. -- This message was sent by Atlassian Jira (v8.3.4#803005)