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https://issues.apache.org/jira/browse/CASSANDRA-15118?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

eBugs in Cloud Systems updated CASSANDRA-15118:
-----------------------------------------------
    Description: 
Dear Cassandra developers, we are developing a tool to detect exception-related 
bugs in Java. Our prototype has spotted the following {{throw}} statement whose 
exception class and error message seem to indicate different error conditions. 
Since we are not very familiar with Cassandra's internal work flow, could you 
please help us verify if this is a bug, i.e., will the callers have trouble 
handling the exception, and will the users/admins have trouble diagnosing the 
failure?

 

Version: Cassandra-3.11 (commit: 123113f7b887370a248669ee0db6fdf13df0146e) 

File: CASSANDRA-ROOT/src/java/org/apache/cassandra/utils/obs/OffHeapBitSet.java

Line: 49
{code:java}
throw new RuntimeException("Out of native memory occured, You can avoid it by 
increasing the system ram space or by increasing 
bloom_filter_fp_chance.");{code}
Reason: {{RuntimeException}} is usually used to represent errors in the program 
logic (think of one of its subclasses, {{NullPointerException}}), while the 
error message indicates that {{OffHeapBitSet()}} ran out of memory. Will this 
mismatch be a problem? For example, will the callers miss the possibility that 
{{OffHeapBitSet()}} can run out of memory? Or, will the callers trying to 
handle other {{RuntimeException}} accidentally (and incorrectly) handle the out 
of memory scenario?

  was:
Dear Cassandra developers, we are developing a tool to detect exception-related 
bugs in Java. Our prototype has spotted the following {{throw}} statement whose 
exception class and error message seem to indicate different error conditions. 
Since we are not very familiar with Cassandra's internal work flow, could you 
please help us verify if this is a bug, i.e., will the callers have trouble 
handling the exception, and will the users/admins have trouble diagnosing the 
failure?

 

Version: Cassandra-3.11 (commit: 123113f7b887370a248669ee0db6fdf13df0146e) 

File: CASSANDRA-ROOT/src/java/org/apache/cassandra/utils/obs/OffHeapBitSet.java

Line: 49
{code:java}
throw new RuntimeException("Out of native memory occured, You can avoid it by 
increasing the system ram space or by increasing 
bloom_filter_fp_chance.");{code}
Reason: {{RuntimeException}} is usually used to represent errors in the program 
logic (think of one of its subclasses, {{NullPointerException}}), while the 
error message indicates that {{OffHeapBitSet()}} ran out of memory. Will this 
mismatch be a problem? For example, will the callers miss the possibility that 
{{OffHeapBitSet()}} can run out of memory? Or, will the callers try to handle 
other {{RuntimeException}} accidentally (and incorrectly) handle the out of 
memory scenario?


> OffHeapBitSet() throws a RuntimeException when it runs out of memory
> --------------------------------------------------------------------
>
>                 Key: CASSANDRA-15118
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15118
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: eBugs in Cloud Systems
>            Priority: Normal
>
> Dear Cassandra developers, we are developing a tool to detect 
> exception-related bugs in Java. Our prototype has spotted the following 
> {{throw}} statement whose exception class and error message seem to indicate 
> different error conditions. Since we are not very familiar with Cassandra's 
> internal work flow, could you please help us verify if this is a bug, i.e., 
> will the callers have trouble handling the exception, and will the 
> users/admins have trouble diagnosing the failure?
>  
> Version: Cassandra-3.11 (commit: 123113f7b887370a248669ee0db6fdf13df0146e) 
> File: 
> CASSANDRA-ROOT/src/java/org/apache/cassandra/utils/obs/OffHeapBitSet.java
> Line: 49
> {code:java}
> throw new RuntimeException("Out of native memory occured, You can avoid it by 
> increasing the system ram space or by increasing 
> bloom_filter_fp_chance.");{code}
> Reason: {{RuntimeException}} is usually used to represent errors in the 
> program logic (think of one of its subclasses, {{NullPointerException}}), 
> while the error message indicates that {{OffHeapBitSet()}} ran out of memory. 
> Will this mismatch be a problem? For example, will the callers miss the 
> possibility that {{OffHeapBitSet()}} can run out of memory? Or, will the 
> callers trying to handle other {{RuntimeException}} accidentally (and 
> incorrectly) handle the out of memory scenario?



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