[jira] [Created] (IMPALA-8243) ConcurrentModificationException in Catalog stress tests
bharath v created IMPALA-8243:
-
Summary: ConcurrentModificationException in Catalog stress tests
Key: IMPALA-8243
URL: https://issues.apache.org/jira/browse/IMPALA-8243
Project: IMPALA
Issue Type: Bug
Components: Catalog
Affects Versions: Impala 3.1.0
Reporter: bharath v
Assignee: bharath v
Following is the full stack from the Catalog server logs.
{noformat}
14:09:29.474424 14829 jni-util.cc:256] java.util.ConcurrentModificationException
java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
java.util.ArrayList$Itr.next(ArrayList.java:851)
org.apache.hadoop.hive.metastore.api.StorageDescriptor$StorageDescriptorStandardScheme.write(StorageDescriptor.java:1449)
org.apache.hadoop.hive.metastore.api.StorageDescriptor$StorageDescriptorStandardScheme.write(StorageDescriptor.java:1278)
org.apache.hadoop.hive.metastore.api.StorageDescriptor.write(StorageDescriptor.java:1144)
org.apache.hadoop.hive.metastore.api.Partition$PartitionStandardScheme.write(Partition.java:1062)
org.apache.hadoop.hive.metastore.api.Partition$PartitionStandardScheme.write(Partition.java:919)
org.apache.hadoop.hive.metastore.api.Partition.write(Partition.java:815)
org.apache.impala.thrift.TPartialPartitionInfo$TPartialPartitionInfoStandardScheme.write(TPartialPartitionInfo.java:862)
org.apache.impala.thrift.TPartialPartitionInfo$TPartialPartitionInfoStandardScheme.write(TPartialPartitionInfo.java:759)
org.apache.impala.thrift.TPartialPartitionInfo.write(TPartialPartitionInfo.java:665)
org.apache.impala.thrift.TPartialTableInfo$TPartialTableInfoStandardScheme.write(TPartialTableInfo.java:731)
org.apache.impala.thrift.TPartialTableInfo$TPartialTableInfoStandardScheme.write(TPartialTableInfo.java:624)
org.apache.impala.thrift.TPartialTableInfo.write(TPartialTableInfo.java:543)
org.apache.impala.thrift.TGetPartialCatalogObjectResponse$TGetPartialCatalogObjectResponseStandardScheme.write(TGetPartialCatalogObjectResponse.java:977)
org.apache.impala.thrift.TGetPartialCatalogObjectResponse$TGetPartialCatalogObjectResponseStandardScheme.write(TGetPartialCatalogObjectResponse.java:857)
org.apache.impala.thrift.TGetPartialCatalogObjectResponse.write(TGetPartialCatalogObjectResponse.java:739)
org.apache.thrift.TSerializer.serialize(TSerializer.java:79)
org.apache.impala.service.JniCatalog.getPartialCatalogObject(JniCatalog.java:233)
{noformat}
It looks like the bug is in the following piece of code.
{noformat}
/**
* Returns a Hive-compatible partition object that may be used in calls to the
* metastore.
*/
public org.apache.hadoop.hive.metastore.api.Partition toHmsPartition() {
if (cachedMsPartitionDescriptor_ == null) return null;
Preconditions.checkNotNull(table_.getNonPartitionFieldSchemas());
// Update the serde library class based on the currently used file format.
org.apache.hadoop.hive.metastore.api.StorageDescriptor storageDescriptor =
new org.apache.hadoop.hive.metastore.api.StorageDescriptor(
table_.getNonPartitionFieldSchemas(), <= Reference to the
actual field schema list.
getLocation(),
cachedMsPartitionDescriptor_.sdInputFormat,
cachedMsPartitionDescriptor_.sdOutputFormat,
cachedMsPartitionDescriptor_.sdCompressed,
{noformat}
It appears we are leaking a reference to {{nonPartFieldSchemas_}} in to the
thrift object and once the thread leaves the lock scope, some other thread
(load() for ex:) can potentially change the source list and the serialization
code could throw {{ConcurrentModificationException}}
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[jira] [Created] (IMPALA-8243) ConcurrentModificationException in Catalog stress tests
bharath v created IMPALA-8243:
-
Summary: ConcurrentModificationException in Catalog stress tests
Key: IMPALA-8243
URL: https://issues.apache.org/jira/browse/IMPALA-8243
Project: IMPALA
Issue Type: Bug
Components: Catalog
Affects Versions: Impala 3.1.0
Reporter: bharath v
Assignee: bharath v
Following is the full stack from the Catalog server logs.
{noformat}
14:09:29.474424 14829 jni-util.cc:256] java.util.ConcurrentModificationException
java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
java.util.ArrayList$Itr.next(ArrayList.java:851)
org.apache.hadoop.hive.metastore.api.StorageDescriptor$StorageDescriptorStandardScheme.write(StorageDescriptor.java:1449)
org.apache.hadoop.hive.metastore.api.StorageDescriptor$StorageDescriptorStandardScheme.write(StorageDescriptor.java:1278)
org.apache.hadoop.hive.metastore.api.StorageDescriptor.write(StorageDescriptor.java:1144)
org.apache.hadoop.hive.metastore.api.Partition$PartitionStandardScheme.write(Partition.java:1062)
org.apache.hadoop.hive.metastore.api.Partition$PartitionStandardScheme.write(Partition.java:919)
org.apache.hadoop.hive.metastore.api.Partition.write(Partition.java:815)
org.apache.impala.thrift.TPartialPartitionInfo$TPartialPartitionInfoStandardScheme.write(TPartialPartitionInfo.java:862)
org.apache.impala.thrift.TPartialPartitionInfo$TPartialPartitionInfoStandardScheme.write(TPartialPartitionInfo.java:759)
org.apache.impala.thrift.TPartialPartitionInfo.write(TPartialPartitionInfo.java:665)
org.apache.impala.thrift.TPartialTableInfo$TPartialTableInfoStandardScheme.write(TPartialTableInfo.java:731)
org.apache.impala.thrift.TPartialTableInfo$TPartialTableInfoStandardScheme.write(TPartialTableInfo.java:624)
org.apache.impala.thrift.TPartialTableInfo.write(TPartialTableInfo.java:543)
org.apache.impala.thrift.TGetPartialCatalogObjectResponse$TGetPartialCatalogObjectResponseStandardScheme.write(TGetPartialCatalogObjectResponse.java:977)
org.apache.impala.thrift.TGetPartialCatalogObjectResponse$TGetPartialCatalogObjectResponseStandardScheme.write(TGetPartialCatalogObjectResponse.java:857)
org.apache.impala.thrift.TGetPartialCatalogObjectResponse.write(TGetPartialCatalogObjectResponse.java:739)
org.apache.thrift.TSerializer.serialize(TSerializer.java:79)
org.apache.impala.service.JniCatalog.getPartialCatalogObject(JniCatalog.java:233)
{noformat}
It looks like the bug is in the following piece of code.
{noformat}
/**
* Returns a Hive-compatible partition object that may be used in calls to the
* metastore.
*/
public org.apache.hadoop.hive.metastore.api.Partition toHmsPartition() {
if (cachedMsPartitionDescriptor_ == null) return null;
Preconditions.checkNotNull(table_.getNonPartitionFieldSchemas());
// Update the serde library class based on the currently used file format.
org.apache.hadoop.hive.metastore.api.StorageDescriptor storageDescriptor =
new org.apache.hadoop.hive.metastore.api.StorageDescriptor(
table_.getNonPartitionFieldSchemas(), <= Reference to the
actual field schema list.
getLocation(),
cachedMsPartitionDescriptor_.sdInputFormat,
cachedMsPartitionDescriptor_.sdOutputFormat,
cachedMsPartitionDescriptor_.sdCompressed,
{noformat}
It appears we are leaking a reference to {{nonPartFieldSchemas_}} in to the
thrift object and once the thread leaves the lock scope, some other thread
(load() for ex:) can potentially change the source list and the serialization
code could throw {{ConcurrentModificationException}}
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