[DRILL-4964] Drill fails to connect to hive metastore after hive metastore is restarted unless drillbits are restarted also

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.8.0
• Fix Version/s: 1.9.0
• Assignee: Sorabh Hamirwasia
• Reporter: Sorabh Hamirwasia
• Reviewer: Krystal
• Created: 26/Oct/16 01:44
• Updated: 08/Nov/16 22:30
• Resolved: 30/Oct/16 21:38

Description

It is found that if Hive Metastore is restarted then Drillbit also needs to be restarted to further query and connect to hive metastore.

Repro Steps:
===========
1) Start HiveMetastore and drillbit.
2) Start Drillbit client with Scheman as hive and run a simple query like "show databases"
Command to start client: sqlline -u "jdbc:drill:schema=hive;drillbit=<name>"
3) restart hive metastore
4) Execute same query "show databases" on existing drillclient or new one. You will see that hive default database is not listed. If you query any hive data then it will fail.

Log snippet from drillbit.log:
======================

2016-10-25 18:32:00,561 [27eff86e-e8fb-3d91-eb88-4af75ff6d174:foreman] INFO o.a.drill.exec.work.foreman.Foreman - Query text for query id 27eff86e-e8fb-3d91-eb88-4af75ff6d174: show databases
2016-10-25 18:32:00,563 [27eff86e-e8fb-3d91-eb88-4af75ff6d174:foreman] DEBUG o.a.d.e.s.h.HBaseStoragePluginConfig - Initializing HBase StoragePlugin configuration with zookeeper quorum 'localhost', port '2181'.
2016-10-25 18:32:00,595 [27eff86e-e8fb-3d91-eb88-4af75ff6d174:foreman] WARN o.a.d.e.s.h.schema.HiveSchemaFactory - Failure while attempting to access HiveDatabase 'default'.
java.util.concurrent.ExecutionException: MetaException(message:Got exception: org.apache.thrift.transport.TTransportException null)
at com.google.common.util.concurrent.AbstractFuture$Sync.getValue(AbstractFuture.java:299) ~[guava-18.0.jar:na]
at com.google.common.util.concurrent.AbstractFuture$Sync.get(AbstractFuture.java:286) ~[guava-18.0.jar:na]
at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:116) ~[guava-18.0.jar:na]
at com.google.common.util.concurrent.Uninterruptibles.getUninterruptibly(Uninterruptibles.java:137) ~[guava-18.0.jar:na]
at com.google.common.cache.LocalCache$Segment.getAndRecordStats(LocalCache.java:2348) ~[guava-18.0.jar:na]
at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2320) ~[guava-18.0.jar:na]
at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2282) ~[guava-18.0.jar:na]
at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2197) ~[guava-18.0.jar:na]
at com.google.common.cache.LocalCache.get(LocalCache.java:3937) ~[guava-18.0.jar:na]
at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3941) ~[guava-18.0.jar:na]
at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4824) ~[guava-18.0.jar:na]
at org.apache.drill.exec.store.hive.DrillHiveMetaStoreClient$HiveClientWithCaching.getDatabases(DrillHiveMetaStoreClient.java:415) ~[drill-storage-hive-core-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
at org.apache.drill.exec.store.hive.schema.HiveSchemaFactory$HiveSchema.getSubSchema(HiveSchemaFactory.java:139) [drill-storage-hive-core-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
at org.apache.drill.exec.store.hive.schema.HiveSchemaFactory$HiveSchema.<init>(HiveSchemaFactory.java:133) [drill-storage-hive-core-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
at org.apache.drill.exec.store.hive.schema.HiveSchemaFactory.registerSchemas(HiveSchemaFactory.java:118) [drill-storage-hive-core-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
at org.apache.drill.exec.store.hive.HiveStoragePlugin.registerSchemas(HiveStoragePlugin.java:100) [drill-storage-hive-core-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
at org.apache.drill.exec.store.StoragePluginRegistryImpl$DrillSchemaFactory.registerSchemas(StoragePluginRegistryImpl.java:365) [drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
at org.apache.drill.exec.store.SchemaTreeProvider.createRootSchema(SchemaTreeProvider.java:72) [drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
at org.apache.drill.exec.store.SchemaTreeProvider.createRootSchema(SchemaTreeProvider.java:61) [drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
at org.apache.drill.exec.ops.QueryContext.getRootSchema(QueryContext.java:147) [drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
at org.apache.drill.exec.ops.QueryContext.getRootSchema(QueryContext.java:137) [drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
at org.apache.drill.exec.ops.QueryContext.getNewDefaultSchema(QueryContext.java:123) [drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
at org.apache.drill.exec.planner.sql.DrillSqlWorker.getPlan(DrillSqlWorker.java:62) [drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
at org.apache.drill.exec.work.foreman.Foreman.runSQL(Foreman.java:1008) [drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
at org.apache.drill.exec.work.foreman.Foreman.run(Foreman.java:264) [drill-java-exec-1.9.0-SNAPSHOT.jar:1.9.0-SNAPSHOT]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_111]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_111]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_111]
Caused by: org.apache.hadoop.hive.metastore.api.MetaException: Got exception: org.apache.thrift.transport.TTransportException null
at org.apache.hadoop.hive.metastore.MetaStoreUtils.logAndThrowMetaException(MetaStoreUtils.java:1213) ~[hive-metastore-1.2.0-mapr-1608.jar:1.2.0-mapr-1608]

Issue Links

• links to: GitHub Pull Request #628