Mike Percy created KUDU-1910:
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Summary: Crash when writing to a closed TLS socket before squeasel
startup
Key: KUDU-1910
URL: https://issues.apache.org/jira/browse/KUDU-1910
Project: Kudu
Issue Type: Bug
Affects Versions: 1.3.0
Reporter: Mike Percy
Priority: Critical
It is possible to receive a SIGPIPE when writing to a closed TLS socket. At the
time of writing, Kudu doesn't explicitly ignore SIGPIPE early in the startup
process. Even after we change that, the problem will exist for user programs
utilizing the Kudu C++ client for the same reason.
Some potential workarounds for the client issue:
1. Implicitly set the disposition of SIGPIPE to SIG_IGN from a library for the
whole client program. We could put this behind a KuduClientBuilder option.
2. Use the [OpenSSL BIO API](https://wiki.openssl.org/index.php/BIO) to set
flags to avoid the generation of PIPE signals.
3. Document that clients must ignore or block the PIPE signal in threads that
use the Kudu C++ Client API.
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