Andy Seaborne created JENA-1224:
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Summary: Limit the number of outstanding write transactions in TDB.
Key: JENA-1224
URL: https://issues.apache.org/jira/browse/JENA-1224
Project: Apache Jena
Issue Type: Improvement
Components: TDB
Affects Versions: Jena 3.1.0
Reporter: Andy Seaborne
The TDB journal can grow due to write-back being blocked by a long running
reader, or a succession of overlapping short reads, and many updates.
This [users@
email|https://lists.apache.org/thread.html/99b01f1dc7af86e0832279a85da6963985fc9f1f2c36d3c3969aaeb1@%3Cusers.jena.apache.org%3E]
may be caused by this effect. This accumulated layers of wrappers consume heap
(<300).
At some time, lock out new transactions and wait to flush the journal when it
has many layers in it.
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