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https://issues.apache.org/jira/browse/IMPALA-2648?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Tianyi Wang resolved IMPALA-2648.
---------------------------------
Resolution: Fixed
Fix Version/s: Impala 2.12.0
This has already been fixed by IMPALA-5990
> catalogd crashes when serialized messages are over 2 GB
> -------------------------------------------------------
>
> Key: IMPALA-2648
> URL: https://issues.apache.org/jira/browse/IMPALA-2648
> Project: IMPALA
> Issue Type: Bug
> Components: Catalog
> Affects Versions: Impala 2.3.0
> Reporter: Silvius Rus
> Assignee: Tianyi Wang
> Priority: Critical
> Labels: compute-stats, crash, downgraded
> Fix For: Impala 2.12.0
>
>
> We've seen a catalogd crash triggered by loading the metadata for a table
> with about 20K partitions and 77 columns that has incremental stats. It
> looks like the serialized message is over 2GB which is the Java max array
> size. Ideally we should catch this exception and fail the query that needs
> this table's metadata with an appropriate message.
> {code}
> I1107 06:47:56.641507 30252 jni-util.cc:177] java.lang.OutOfMemoryError:
> Requested array size exceeds VM limit
> at java.util.Arrays.copyOf(Arrays.java:2271)
> at java.io.ByteArrayOutputStream.grow(ByteArrayOutputStream.java:113)
> at java.io.ByteArrayOutputStream.ensureCapacity(ByteArrayOutputStream.java:93)
> at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:140)
> at
> org.apache.thrift.transport.TIOStreamTransport.write(TIOStreamTransport.java:145)
> at
> org.apache.thrift.protocol.TBinaryProtocol.writeString(TBinaryProtocol.java:187)
> at
> com.cloudera.impala.thrift.THdfsPartition$THdfsPartitionStandardScheme.write(THdfsPartition.java:1831)
> at
> com.cloudera.impala.thrift.THdfsPartition$THdfsPartitionStandardScheme.write(THdfsPartition.java:1543)
> at com.cloudera.impala.thrift.THdfsPartition.write(THdfsPartition.java:1389)
> at
> com.cloudera.impala.thrift.THdfsTable$THdfsTableStandardScheme.write(THdfsTable.java:1123)
> at
> com.cloudera.impala.thrift.THdfsTable$THdfsTableStandardScheme.write(THdfsTable.java:969)
> at com.cloudera.impala.thrift.THdfsTable.write(THdfsTable.java:848)
> at
> com.cloudera.impala.thrift.TTable$TTableStandardScheme.write(TTable.java:1628)
> at
> com.cloudera.impala.thrift.TTable$TTableStandardScheme.write(TTable.java:1395)
> at com.cloudera.impala.thrift.TTable.write(TTable.java:1209)
> at
> com.cloudera.impala.thrift.TCatalogObject$TCatalogObjectStandardScheme.write(TCatalogObject.java:1241)
> at
> com.cloudera.impala.thrift.TCatalogObject$TCatalogObjectStandardScheme.write(TCatalogObject.java:1098)
> at com.cloudera.impala.thrift.TCatalogObject.write(TCatalogObject.java:938)
> at
> com.cloudera.impala.thrift.TGetAllCatalogObjectsResponse$TGetAllCatalogObjectsResponseStandardScheme.write(TGetAllCatalogObjectsResponse.java:487)
> at
> com.cloudera.impala.thrift.TGetAllCatalogObjectsResponse$TGetAllCatalogObjectsResponseStandardScheme.write(TGetAllCatalogObjectsResponse.java:421)
> at
> com.cloudera.impala.thrift.TGetAllCatalogObjectsResponse.write(TGetAllCatalogObjectsResponse.java:365)
> at org.apache.thrift.TSerializer.serialize(TSerializer.java:79)
> at
> com.cloudera.impala.service.JniCatalog.getCatalogObjects(JniCatalog.java:110)
> {code}
> You can identify this issue by looking at the metastore database. Here is
> how to see the size of the incremental stats for table id 12345. The table
> with this value of 624 MB of incremental stats led to the catalogd crash
> shown above.
> {code}
> postgres=# select pg_size_pretty(sum(length("PARTITION_PARAMS"."PARAM_KEY") +
> length("PARTITION_PARAMS"."PARAM_VALUE"))) from "PARTITIONS",
> "PARTITION_PARAMS" where "PARTITIONS"."TBL_ID"=12345 and
> "PARTITIONS"."PART_ID" = "PARTITION_PARAMS"."PART_ID" and
> "PARTITION_PARAMS"."PARAM_KEY" LIKE 'impala_intermediate%';
> pg_size_pretty
> ----------------
> 624 MB
> (1 row)
> {code}
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