Tim Armstrong created IMPALA-8521:
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Summary: Lots of "unreleased ByteBuffers allocated by read()"
errors from HDFS client
Key: IMPALA-8521
URL: https://issues.apache.org/jira/browse/IMPALA-8521
Project: IMPALA
Issue Type: Bug
Components: Backend
Reporter: Tim Armstrong
Assignee: Sahil Takiar
I'm looking at some job logs and seeing a bunch of errors like this. I don't
know if it's benign or if it's something more serious.
{noformat}
I0507 07:34:53.934693 20195 scan-range.cc:607]
dd4d6eb8d2ad9587:6b44fe1b00000002] Cache read failed for scan range:
file=hdfs://localhost:20500/test-warehouse/f861f1a3/nation.tbl disk_id=0
offset=1024 exclusive_hdfs_fh=0xec09220 num_remote_bytes=0 cancel_status=
buffer_queue=0 num_buffers_in_readers=0 unused_iomgr_buffers=0
unused_iomgr_buffer_bytes=0 blocked_on_buffer=0. Switching to disk read path.
W0507 07:34:53.934787 20195 DFSInputStream.java:668]
dd4d6eb8d2ad9587:6b44fe1b00000002] closing file
/test-warehouse/f861f1a3/nation.tbl, but there are still unreleased ByteBuffers
allocated by read(). Please release java.nio.DirectByteBufferR[pos=1024
lim=2048 cap=2199].
{noformat}
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