https://issues.apache.org/bugzilla/show_bug.cgi?id=52069
Bug #: 52069
Summary: Heap out of memory errors for large xlsx files - even
when using PipedReader to read file
Product: POI
Version: unspecified
Platform: PC
OS/Version: Windows XP
Status: NEW
Severity: major
Priority: P2
Component: XSSF
AssignedTo: dev@poi.apache.org
ReportedBy: meghana.vishwan...@gmail.com
Classification: Unclassified
While parsing an xlsx file of about 4 MB using Apache Tika 0.9, I came across
this error. I am using PipedReader and PipedWriter to access the file content.
Hence, I believe that heap size allocation is not really a problem since I have
been running the same code with much larger files.
Looking at the memory consumption using a profiler, I found that instances of 2
classes - org.apache.xmlbeans.impl.store.Xobj$AttrXobj and Xobj$ElementXobj
seem to grow exponentially with file size. For the above mentioned file, there
were more than 1,600,000 objects of type Xobj$AttrXobj.
I am attaching the xlsx file which caused this error.
Note: this error also occurs for .docx files.
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