Piotr Nowojski created FLINK-17928:
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Summary: Incorrect state size reported when using unaligned
checkpoints
Key: FLINK-17928
URL: https://issues.apache.org/jira/browse/FLINK-17928
Project: Flink
Issue Type: Bug
Components: Runtime / Checkpointing
Affects Versions: 1.11.0
Reporter: Piotr Nowojski
Fix For: 1.11.0
Even when checkpoints on HDFS are between 100-300MBs, the reported state size
is in orders of magnitude larger with values like:
{noformat}
1GiB 1.5TiB 2.0TiB 2.1TiB 2.1TiB
148GiB 148GiB 148GiB 148GiB 148GiB 148GiB
{noformat}
it's probably because we have multiple {{Collection<InputChannelStateHandle>}},
and each of the individual handle returns the same value from
{{AbstractChannelStateHandle#getStateSize}} - the full size of the spilled
data, ignoring that only small portion of those data belong to a single input
channel/result subpartition. In other words {{
org.apache.flink.runtime.state.AbstractChannelStateHandle#getStateSize}} should
be taking the offsets into account and return only the size of the data that
belong exclusively to this handle.
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