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https://issues.apache.org/jira/browse/HIVE-6711?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Prasanth J updated HIVE-6711:
-----------------------------
Description:
HIVE-6707 had issues with map size. getMapSize() of LazyMap and LazyBinaryMap
does not deserialize the keys and count the number of unique keys. Since
getMapSize() may return non-distinct count of keys, the length of maps stored
using ORC's map tree writer will not be in sync with actual map size. As a
result of this RLE reader will try to read beyond the disk range expecting more
map entries and will throw exception.
Stack trace will look like:
{code}
Caused by: java.io.EOFException: Read past end of RLE integer from compressed
stream Stream for column 2 kind DATA position: 22059699 length: 22059699 range:
0 offset: 22359014 limit: 22359014 range 0 = 0 to 22059699 uncompressed: 53370
to 53370
at
org.apache.hadoop.hive.ql.io.orc.RunLengthIntegerReaderV2.readValues(RunLengthIntegerReaderV2.java:54)
at
org.apache.hadoop.hive.ql.io.orc.RunLengthIntegerReaderV2.next(RunLengthIntegerReaderV2.java:301)
at
org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl$StringDictionaryTreeReader.next(RecordReaderImpl.java:1572)
at
org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl$StringTreeReader.next(RecordReaderImpl.java:1330)
at
org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl$MapTreeReader.next(RecordReaderImpl.java:2041)
at
org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl$StructTreeReader.next(RecordReaderImpl.java:1772)
at
org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl.next(RecordReaderImpl.java:2963)
at
org.apache.hadoop.hive.ql.io.orc.OrcInputFormat$OrcRecordReader.next(OrcInputFormat.java:121)
{code}
was:HIVE-6707 had issues with map size. getMapSize() of LazyMap and
LazyBinaryMap does not deserialize the keys and count the number of unique
keys. Since getMapSize() may return non-distinct count of keys, the length of
maps stored using ORC's map tree writer will not be in sync with actual map
size. As a result of this RLE reader will try to read beyond the disk range
expecting more map entries and will throw exception.
> ORC maps uses getMapSize() from MapOI which is unreliable
> ---------------------------------------------------------
>
> Key: HIVE-6711
> URL: https://issues.apache.org/jira/browse/HIVE-6711
> Project: Hive
> Issue Type: Bug
> Affects Versions: 0.11.0, 0.12.0, 0.13.0
> Reporter: Prasanth J
> Assignee: Prasanth J
> Labels: orcfile
> Fix For: 0.13.0, 0.14.0
>
> Attachments: HIVE-6711.1.patch
>
>
> HIVE-6707 had issues with map size. getMapSize() of LazyMap and LazyBinaryMap
> does not deserialize the keys and count the number of unique keys. Since
> getMapSize() may return non-distinct count of keys, the length of maps stored
> using ORC's map tree writer will not be in sync with actual map size. As a
> result of this RLE reader will try to read beyond the disk range expecting
> more map entries and will throw exception.
> Stack trace will look like:
> {code}
> Caused by: java.io.EOFException: Read past end of RLE integer from compressed
> stream Stream for column 2 kind DATA position: 22059699 length: 22059699
> range: 0 offset: 22359014 limit: 22359014 range 0 = 0 to 22059699
> uncompressed: 53370 to 53370
> at
> org.apache.hadoop.hive.ql.io.orc.RunLengthIntegerReaderV2.readValues(RunLengthIntegerReaderV2.java:54)
> at
> org.apache.hadoop.hive.ql.io.orc.RunLengthIntegerReaderV2.next(RunLengthIntegerReaderV2.java:301)
> at
> org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl$StringDictionaryTreeReader.next(RecordReaderImpl.java:1572)
> at
> org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl$StringTreeReader.next(RecordReaderImpl.java:1330)
> at
> org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl$MapTreeReader.next(RecordReaderImpl.java:2041)
> at
> org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl$StructTreeReader.next(RecordReaderImpl.java:1772)
> at
> org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl.next(RecordReaderImpl.java:2963)
> at
> org.apache.hadoop.hive.ql.io.orc.OrcInputFormat$OrcRecordReader.next(OrcInputFormat.java:121)
> {code}
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