hbase

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Todd Lipcon 3673bfc241 HBASE-20403. Fix race between prefetch task and non-pread HFile reads With prefetch-on-open enabled, the task doing the prefetching was using non-positional (i.e. streaming) reads. If the main (non-prefetch) thread was also using non-positional reads, these two would conflict, because inputstreams are not thread-safe for non-positional reads. In the case of an encrypted filesystem, this could cause JVM crashes, etc, as underlying cipher buffers were freed underneath the racing threads. In the case of a non-encrypted filesystem, less severe errors would be thrown. The included unit test reproduces the latter case. (cherry picked from commit `025ddce868`) Signed-off-by: Todd Lipcon <todd@cloudera.com>	2018-06-25 12:12:30 -07:00
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src	HBASE-20403. Fix race between prefetch task and non-pread HFile reads	2018-06-25 12:12:30 -07:00
pom.xml	HBASE-20775 TestMultiParallel is flakey	2018-06-24 08:42:53 +08:00

Todd Lipcon 3673bfc241 HBASE-20403. Fix race between prefetch task and non-pread HFile reads

With prefetch-on-open enabled, the task doing the prefetching was using
non-positional (i.e. streaming) reads. If the main (non-prefetch) thread
was also using non-positional reads, these two would conflict, because
inputstreams are not thread-safe for non-positional reads.

In the case of an encrypted filesystem, this could cause JVM crashes,
etc, as underlying cipher buffers were freed underneath the racing
threads. In the case of a non-encrypted filesystem, less severe errors
would be thrown. The included unit test reproduces the latter case.

(cherry picked from commit 025ddce868)
Signed-off-by: Todd Lipcon <todd@cloudera.com>

2018-06-25 12:12:30 -07:00

src HBASE-20403. Fix race between prefetch task and non-pread HFile reads 2018-06-25 12:12:30 -07:00

pom.xml HBASE-20775 TestMultiParallel is flakey 2018-06-24 08:42:53 +08:00